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Onyeama F, Melegkovits E, Yu N, Parvez A, Rodrigues A, Billings J, Kelleher I, Cannon M, Bloomfield MAP. A systematic review and meta-analysis of the traumatogenic phenotype hypothesis of psychosis. BJPsych Open 2024; 10:e146. [PMID: 39118412 DOI: 10.1192/bjo.2024.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/10/2024] Open
Abstract
BACKGROUND Developmental trauma increases psychosis risk and is associated with poor prognosis. It has been proposed that psychosis in survivors of developmental trauma gives rise to a distinct 'traumatogenic' phenotype. AIMS Given the implications for personalised treatment, we sought to explore the traumatogenic psychosis phenotype hypothesis in a systematic review and meta-analysis of studies comparing psychotic presentations between adults with and without developmental trauma histories. METHOD We registered the systematic review on PROSPERO (CRD42019131245) and systematically searched EMBASE, Medline and PsycINFO. The outcomes of interests were quantitative and qualitative comparisons in psychotic symptom expression (positive, negative, cognitive) and other domains of psychopathology, including affect regulation, sleep, depression and anxiety, between adults with and without experience of developmental trauma. RESULTS Of 34 studies included (N = 13 150), 11 were meta-analysed (n = 2842). A significant relationship was found between developmental trauma and increased symptom severity for positive (Hedge's g = 0.27; 95% CI 0.10-0.44; P = 0.002), but not negative symptoms (Hedge's g = 0.13; 95% CI -0.04 to 0.30; P = 0.14). Developmental trauma was associated with greater neurocognitive, specifically executive, deficits, as well as poorer affect, dissociation and social cognition. Furthermore, psychotic symptom content thematically related to traumatic memories in survivors of developmental trauma. CONCLUSIONS Our findings that developmental trauma is associated with more severe positive and affective symptoms, and qualitative differences in symptom expression, support the notion that there may be a traumatogenic psychosis phenotype. However, underdiagnosis of post-traumatic stress disorder may also explain some of these findings. More research is needed to explore this further.
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Affiliation(s)
- Franca Onyeama
- Division of Psychiatry, University College London, UK; and Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Institute of Mental Health, Faculty of Brain Sciences, Division of Psychiatry, University College London, UK
| | - Eirini Melegkovits
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Institute of Mental Health, Faculty of Brain Sciences, Division of Psychiatry, University College London, UK
| | - Nicole Yu
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Institute of Mental Health, Faculty of Brain Sciences, Division of Psychiatry, University College London, UK
| | - Ameerah Parvez
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Institute of Mental Health, Faculty of Brain Sciences, Division of Psychiatry, University College London, UK; and UCL Medical School, University College London, UK
| | - Artur Rodrigues
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Institute of Mental Health, Faculty of Brain Sciences, Division of Psychiatry, University College London, UK; and Department of Biology, Faculdade de Ciências da Universidade do Porto, Portugal
| | - Jo Billings
- Division of Psychiatry, University College London, UK
| | - Ian Kelleher
- School of Medicine and Medical Sciences, University College Dublin, Ireland; Department of Psychiatry, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Ireland; and Lucena Clinic, St John of God Community Mental Health Services, Dublin, Ireland
| | - Mary Cannon
- Department of Psychiatry, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland
| | - Michael A P Bloomfield
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Institute of Mental Health, Faculty of Brain Sciences, Division of Psychiatry, University College London, UK; Traumatic Stress Clinic, St Pancras Hospital, Camden and Islington NHS Foundation Trust, London, UK; National Institute for Health Research, University College London Hospitals Biomedical Research Centre, London, UK; and National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, London, UK
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2
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Minami R, Yamasaki S, Kiyono T, Tanaka R, Kanata S, Fujikawa S, Usami S, Stanyon D, Nishida A, Kasai K, Ando S. Psychotic experiences and dissociation in adolescents: Within-person analysis in the Tokyo teen cohort. Schizophr Res 2024; 270:416-422. [PMID: 38991417 DOI: 10.1016/j.schres.2024.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 07/01/2024] [Accepted: 07/03/2024] [Indexed: 07/13/2024]
Abstract
Although many cross-sectional studies showed that psychotic experiences (PEs) and dissociation were closely related, the longitudinal association between them remains unknown. Therefore, the aim of the current study was to examine the longitudinal association of these two symptoms throughout adolescence, under the hypothesis that these two symptoms are bidirectionally associated. Data were obtained from a population-based cohort, the Tokyo Teen Cohort study (TTC; N = 3171). PEs and dissociation were assessed at 10, 12, 14, and 16 years of age. PEs were assessed using a total score from five-item self-report questionnaires derived from the Diagnostic Interview Schedule for Children (DISC-C). Dissociation was assessed using subscale scores of the Child Behavior Checklist (CBCL) completed by primary caregivers. We examined the longitudinal relationship between PEs and dissociation using the random intercept cross-lagged panel model (RI-CLPM). The within-person component of the RI-CLPM revealed no significant cross-lagged effect of dissociation on PEs at any time point. On the other hand, there was a significant (p < 0.05) association between PEs at age 14 and dissociation at age 16 (β = 0.106, 95 % CI 0.047-0.165). The between-person component revealed a significant time-invariant relationship between the two symptoms (β = 0.324, 95 % CI 0.239-0.410). The longitudinal relationship between PEs and dissociation was limited at the within-person level, whereas the between-person correlation was significant. The only significant longitudinal pathway was from PEs to dissociation, suggesting that PEs may be a predictor of dissociation in mid-adolescence.
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Affiliation(s)
- Rin Minami
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Syudo Yamasaki
- Research Center for Social Science and Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | | | - Riki Tanaka
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Sho Kanata
- Department of Psychiatry, Teikyo University School of Medicine, Tokyo, Japan
| | - Shinya Fujikawa
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Satoshi Usami
- Graduate School of Education, The University of Tokyo, Tokyo, Japan
| | - Daniel Stanyon
- Research Center for Social Science and Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Atsushi Nishida
- Research Center for Social Science and Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kiyoto Kasai
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shuntaro Ando
- Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
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Del Pozo-Herce P, Miguel AGD, Gonzalez-Rosas L, Alejandro-Rubio O, Pascual-Lapuerta C, Porras-Segovia A. Grief as a Risk Factor for Psychosis: A Systematic Review. Curr Psychiatry Rep 2024; 26:379-393. [PMID: 38833148 DOI: 10.1007/s11920-024-01512-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/06/2024] [Indexed: 06/06/2024]
Abstract
PURPOSE OF REVIEW The assessment of the risk of triggering psychosis upon exposure to grief is a challenge in clinical practice. Adequate diagnosis and early prevention are essential and may be helpful in the evolution of normal grief. We aimed to identify studies exploring grief as a risk factor for developing psychosis. RECENT FINDINGS A systematic review of 3 databases (PubMed, EMBASE, and Cochrane Library) was conducted. RESULTS In the first approach 618 studies were identified. After the selection process, 15 studies were included in the review. The association between grief and the risk of developing psychosis occurred at younger ages (before 18 years of age) in a first-degree relative and as a consequence of suicide or accidental death. We found that risk factors such as comorbidity, mental problems, unemployment, economic difficulties, and close ties with the deceased have a negative impact on health causing greater vulnerability to psychosis with a risk of developing complicated grief, with statistically significant results regarding the associations between early parental death and the probability of developing psychosis in adulthood.
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Affiliation(s)
- Pablo Del Pozo-Herce
- Department of Psychiatry, Fundación Jiménez Díaz University Hospital, Madrid, Spain.
- Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain.
| | | | - Luis Gonzalez-Rosas
- Department of Psychiatry, Fundación Jiménez Díaz University Hospital, Madrid, Spain
| | | | | | - Alejandro Porras-Segovia
- Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain
- Department of Psychiatry, Hospital Rey Juan Carlos, Madrid, Spain
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Le Bellego M, Chaste P, Dzierzynski N. Auditory illusions and Post-traumatic stress disorder: Sound test in a case-control study. J Psychiatr Res 2024; 178:88-93. [PMID: 39128220 DOI: 10.1016/j.jpsychires.2024.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 05/05/2024] [Accepted: 06/04/2024] [Indexed: 08/13/2024]
Abstract
Post-Traumatic Stress Disorder (PTSD) is a prevalent and disabling disorder with a high degree of comorbidity. Clinical studies have focused on hallucinations, which could be associated with the severity of the disorder and treatment resistance. Auditory illusions have received little attention so far, possibly because they are particularly difficult to assess. However, they may impact functioning, and underdiagnosis could impair prognosis. To provide a clearer understanding of PTSD psychopathology, this paper proposes to focus on these auditory illusions. A monocentric case-control study was conducted on 30 subjects with PTSD and 30 controls, based on an original design. False recognitions were estimated during a sound test created with a vocoder. Additionally, differences in emotional valence, dissociation, hyperarousal, and reliving were assessed. The study found that individuals with PTSD experience a higher frequency of auditory illusions compared to healthy controls (65% versus 20%, p < 0.001). Additionally, the emotional valence of these illusions was more negative in individuals with PTSD than in controls. The study also identified a correlation between dissociation symptoms, hyperarousal and reliving with auditory illusions. These findings are in line with neurobiological studies of PTSD, as well as cognitive predictive models, and support the hypothesis of a significant prevalence of auditory illusions in PTSD. Like hallucinations, auditory illusions may be influenced by dissociation. Although these results are preliminary, they suggest a need for further investigation into auditory illusions in PTSD and their effect on prognosis.
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Affiliation(s)
- Mathis Le Bellego
- Psychiatry of Children and Adolescent Department, Necker Hospital, 75015 Paris, France.
| | - Pauline Chaste
- Psychiatry of Children and Adolescent Department, Necker Hospital, 75015 Paris, France
| | - Nathalie Dzierzynski
- Department of Psychotraumatology and Addictions, Tenon Hospital, 75020 Paris, France
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5
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Næss JØ, Hirnstein M, Kusztrits I, Larøi F. An online survey on clinical and healthy individuals with auditory verbal hallucinations: Abuse did not lead to more negative voice content. Schizophr Res 2024; 265:39-45. [PMID: 36435717 DOI: 10.1016/j.schres.2022.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/21/2022] [Accepted: 11/18/2022] [Indexed: 11/27/2022]
Abstract
Despite the clinical and theoretical importance of the negative content in auditory verbal hallucinations (AVHs), little research has been conducted on the topic. A handful of studies suggest that trauma or adverse life events contribute to negative content. The findings are somewhat inconsistent, however, possibly due to methodological limitations. Moreover, only trauma occurring in childhood has been investigated so far. In the present study, we studied the effect of abuse, experienced in either child- or adulthood, and clinical status on negative content of AVHs in four groups of participants that were assessed as part of a large, previously published online survey: Individuals with a psychotic disorder and AVHs (total n = 33), who had experienced abuse (n = 21) or not (n = 12) as well as a group of healthy individuals with AVHs (total n = 53), who had experienced abuse (n = 31) or not (n = 22). We hypothesized that having experienced abuse was associated with a higher degree of negative content. The clinical group collectively reported significantly higher degrees of negative AVHs content compared to the healthy group, but there was no effect of abuse on the degree of negative AVHs content. The presence of AVHs was more common amongst individuals who reported a history of abuse compared to individuals with no history of abuse, both in clinical and healthy participants with AVHs. This implies that at group level, being subjected to traumatic events increases an individual's vulnerability to experiencing AVHs. However, it does not necessarily account for negative content in AVHs.
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Affiliation(s)
- Julie Øverbø Næss
- Department of Biological and Medical Psychology, University of Bergen, Norway
| | - Marco Hirnstein
- Department of Biological and Medical Psychology, University of Bergen, Norway; NORMENT - Norwegian Centre of Excellence for Mental Disorders Research, University of Oslo, Oslo, Norway
| | - Isabella Kusztrits
- Department of Biological and Medical Psychology, University of Bergen, Norway; NORMENT - Norwegian Centre of Excellence for Mental Disorders Research, University of Oslo, Oslo, Norway; Division of Psychiatry, Haukeland University Hospital, Bergen, Norway
| | - Frank Larøi
- Department of Psychology, University of Oslo, Oslo, Norway; Psychology and Neuroscience of Cognition Research Unit, University of Liège, Liège, Belgium.
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Chen YJ, Lu ML, Chiu YH, Chen C, Santos VHJ, Goh KK. Linking childhood trauma to the psychopathology of schizophrenia: the role of oxytocin. SCHIZOPHRENIA (HEIDELBERG, GERMANY) 2024; 10:24. [PMID: 38388569 PMCID: PMC10883944 DOI: 10.1038/s41537-024-00433-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 12/31/2023] [Indexed: 02/24/2024]
Abstract
Childhood trauma has been linked to schizophrenia, but underlying biological mechanisms remain elusive. This study explored the potential role of plasma oxytocin as a mediator in the relationship between childhood trauma and the psychopathology of schizophrenia. 160 patients with schizophrenia and 80 age- and sex-matched healthy controls were assessed for childhood trauma experiences using the Childhood Trauma Questionnaire and structured interviews. Psychopathology was evaluated using the Positive and Negative Syndrome Scale and plasma oxytocin levels were measured. Results showed that patients with schizophrenia had lower oxytocin levels and higher childhood trauma scores than healthy controls. There was a significant correlation between childhood trauma scores and psychopathology, with plasma oxytocin levels being inversely associated with psychopathology, except for positive symptoms. Hierarchical regression analysis indicated that both childhood trauma scores and plasma oxytocin levels significantly predicted psychopathology. Plasma oxytocin levels partially mediated the relationship between childhood trauma and schizophrenia psychopathology. This study underscores the potential role of oxytocin in bridging the gap between childhood trauma and schizophrenia.
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Affiliation(s)
- Yuan-Jung Chen
- Department of Psychiatry, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Mong-Liang Lu
- Department of Psychiatry, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Psychiatric Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yi-Hang Chiu
- Department of Psychiatry, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Psychiatric Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Chenyi Chen
- Psychiatric Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Graduate Institute of Injury Prevention and Control, College of Public Health, Taipei Medical University, Taipei, Taiwan
- The Innovative and Translational Research Center of Brain Consciousness, Taipei Medical University, Taipei, Taiwan
| | - Vitor Hugo Jesus Santos
- Department of Psychiatry and Mental Health, Faculty of Health Sciences (FCS-UBI), Cova da Beira University Hospital Center, Covilhã, Portugal
| | - Kah Kheng Goh
- Department of Psychiatry, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
- Psychiatric Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
- Graduate Institute of Injury Prevention and Control, College of Public Health, Taipei Medical University, Taipei, Taiwan.
- The Innovative and Translational Research Center of Brain Consciousness, Taipei Medical University, Taipei, Taiwan.
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7
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Strachan LP, Paulik G, Preece DA, McEvoy PM. Pathways from trauma to unusual perceptual experiences: Modelling the roles of insecure attachment, negative affect, emotion regulation and dissociation. Psychol Psychother 2023; 96:934-951. [PMID: 37493351 DOI: 10.1111/papt.12486] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 07/11/2023] [Indexed: 07/27/2023]
Abstract
BACKGROUND A range of traumas have been linked to voices (auditory verbal hallucinations) and unusual perceptual experiences (UPEs) in other perceptual-sensory domains. Models of PTSD and positive symptoms of psychosis are insufficient in explaining the relationship between trauma and voices. The trauma-related voices (TRV) model was developed to generate novel research in this area. AIMS This study aimed to investigate pathways from trauma to the frequency of UPEs based on a subset of hypothesised relationships in the TRV model. MATERIALS The PTSD Diagnostic Scale for DSM-5, State Adult Attachment Measure, Depression Anxiety and Stress Scales-21, Perth Emotion and Regulation Competency Inventory, Dissociative Experiences Measure Oxford, and Multi-modality Unusual Perceptual Experiences Questionnaire. METHODS We used path analysis in a non-clinical sample (N = 528) to model indirect effects from diverse trauma experiences to the frequency of multi-sensory UPEs via a subset of mediators within the TRV model: insecure attachment, emotion regulation deficits, negative affect and dissociation. RESULTS Our model was an excellent fit to the data and accounted for 37.1% of variance in UPE frequency, and all direct (βs = .14-.61) and indirect pathways (βs = .01-.08) were significant (ps < .001). DISCUSSION Our findings suggest that insecure attachment may link diverse trauma experiences to emotion regulation deficits and negative affect, which are linked to UPE frequency via dissociation. CONCLUSION Our findings provide preliminary evidence for a subset of relationships within the TRV model. Future studies are needed to gather stronger evidence of temporality and causation between these factors, and to test broader pathways within the TRV model.
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Affiliation(s)
- Laura P Strachan
- Discipline of Psychology, Curtin School of Population Health & enAble Institute, Curtin University, Perth, Western Australia, Australia
| | - Georgie Paulik
- School of Psychology, Murdoch University, Perth, Western Australia, Australia
- Perth Voices Clinic, Perth, Western Australia, Australia
- School of Psychological Science, University of Western Australia, Perth, Western Australia, Australia
| | - David A Preece
- Discipline of Psychology, Curtin School of Population Health & enAble Institute, Curtin University, Perth, Western Australia, Australia
- School of Psychological Science, University of Western Australia, Perth, Western Australia, Australia
| | - Peter M McEvoy
- Discipline of Psychology, Curtin School of Population Health & enAble Institute, Curtin University, Perth, Western Australia, Australia
- Centre for Clinical Interventions, Perth, Western Australia, Australia
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Farrugia P, Grech P. The Experience of Hearing Voices: Challenges and Coping Mechanisms. Issues Ment Health Nurs 2023; 44:1254-1264. [PMID: 37832155 DOI: 10.1080/01612840.2023.2262569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Abstract
Auditory hallucinations or hearing voices are often associated with schizophrenia and other psychotic disorders. However, several voice-hearers do not have any mental health issues or diagnoses. The study presented in this paper aimed to explore how voice-hearers understand and react to their concerns by reflecting on and exploring their experiences and interpretations of these experiences. The participants were nine individuals - three females, four males and two others, all experiencing auditory hallucinations for at least five years, residing either at their home or at one of the Hostels run by Richmond Foundation (Malta). A qualitative approach following the principles of Interpretative Phenomenological Analysis was used. In-depth interviews were conducted to explore how the participants perceive their voices, what coping strategies are used, and how their experiences affect their lives. Four super-ordinate themes related to the participants' perceptions and their interpretation of the experience of hearing voices were identified: 'A tough experience', 'Methods used to cope with voices', 'Factors linked to recovery' and 'Relationships'. Furthermore, the study elicited the voice-hearers' recommendations (both for other voice-hearers and mental health professionals).
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Affiliation(s)
- Patrick Farrugia
- Department of Mental Health, Faculty of Health Sciences, University of Malta, Msida, Malta
| | - Paulann Grech
- Department of Mental Health, Faculty of Health Sciences, University of Malta, Msida, Malta
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9
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Fernyhough C, Borghi AM. Inner speech as language process and cognitive tool. Trends Cogn Sci 2023; 27:1180-1193. [PMID: 37770286 DOI: 10.1016/j.tics.2023.08.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/16/2023] [Accepted: 08/22/2023] [Indexed: 09/30/2023]
Abstract
Many people report a form of internal language known as inner speech (IS). This review examines recent growth of research interest in the phenomenon, which has broadly supported a theoretical model in which IS is a functional language process that can confer benefits for cognition in a range of domains. A key insight to have emerged in recent years is that IS is an embodied experience characterized by varied subjective qualities, which can be usefully modeled in artificial systems and whose neural signals have the potential to be decoded through advancing brain-computer interface technologies. Challenges for future research include understanding individual differences in IS and mapping form to function across IS subtypes.
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Affiliation(s)
- Charles Fernyhough
- Department of Psychology and Centre for Research into Inner Experience, Durham University, Durham DH1 3LE, UK.
| | - Anna M Borghi
- Department of Dynamic and Clinical Psychology, and Health Studies, Sapienza University of Rome and Institute of Cognitive Sciences and Technologies, Italian National Research Council, 00185 Rome, Italy
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Smyth E, Steel C, Ellett L. The prevalence of non-affective psychosis in refugee populations: A systematic review. Schizophr Res 2023; 260:99-112. [PMID: 37634388 DOI: 10.1016/j.schres.2023.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 06/27/2023] [Accepted: 08/13/2023] [Indexed: 08/29/2023]
Abstract
BACKGROUND As we face the largest refugee crisis since World War Two, research is increasingly examining the impact of forced displacement. The risk of non-affective psychosis in refugees is evidenced to be significantly greater than non-refugees, and the role of pre-, peri- and post-migratory trauma and dissociation is increasingly implicated. AIMS To determine the prevalence of non-affective psychosis in refugee populations. METHOD PRISMA guidelines were followed. Three key databases (PubMed, PsychINFO and Web of Science), Google scholar and study references were searched. The full-text of 62 studies were screened and 23 studies were eligible for inclusion. A narrative synthesis was undertaken and the Quality Assessment Tool for Quantitative Studies was used to assess methodological quality. (PROSPERO registration CRD42019152170). RESULTS The results were widely heterogeneous. The combined weighted average prevalence of non-affective psychosis in refugee populations was 0.9 %. Psychosis prevalence for individual psychotic symptoms was 28.4 %; 0.5 % for schizophrenia; 1.0 % for psychosis; 0.6 % for mixed psychotic disorders and 2.9 % for psychotic episodes. CONCLUSIONS Variations in examined populations, diagnostic and prevalence classifications, and study designs and methodologies likely contributed to heterogeneity across the data. The findings highlight a greater need to provide more specialist mental health services and trauma-focused interventions, as well as transculturally sensitive assessment and treatment to address refugee vulnerability to psychosis. Future research should examine psychosis prevalence longitudinally and in refugees-only, address methodological bias and further examine the role of trauma and dissociation in refugee psychosis prevalence.
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Affiliation(s)
- Emily Smyth
- Psychology Department, Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, UK.
| | - Craig Steel
- The Oxford Institute of Clinical Psychology Training and Research, The Oxford Centre for Psychological Health, University of Oxford, Isis Education Centre, Warneford Hospital, Oxford OX3 7JX, UK.
| | - Lyn Ellett
- School of Psychology, University of Southampton, UK.
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11
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Sturm ET, Thomas ML, Sares AG, Dave S, Baron D, Compton MT, Palmer BW, Jester DJ, Jeste DV. Review of Major Social Determinants of Health in Schizophrenia-Spectrum Disorders: II. Assessments. Schizophr Bull 2023; 49:851-866. [PMID: 37022911 PMCID: PMC10318889 DOI: 10.1093/schbul/sbad024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
BACKGROUND AND AIMS Social determinants of health (SDoHs) impact the development and course of schizophrenia-spectrum psychotic disorders (SSPDs). Yet, we found no published scholarly reviews of psychometric properties and pragmatic utility of SDoH assessments among people with SSPDs. We aim to review those aspects of SDoH assessments. STUDY DESIGN PsychInfo, PubMed, and Google Scholar databases were examined to obtain data on reliability, validity, administration process, strengths, and limitations of the measures for SDoHs identified in a paired scoping review. STUDY RESULTS SDoHs were assessed using different approaches including self-reports, interviews, rating scales, and review of public databases. Of the major SDoHs, early-life adversities, social disconnection, racism, social fragmentation, and food insecurity had measures with satisfactory psychometric properties. Internal consistency reliabilities-evaluated in the general population for 13 measures of early-life adversities, social disconnection, racism, social fragmentation, and food insecurity-ranged from poor to excellent (0.68-0.96). The number of items varied from 1 to more than 100 and administration time ranged from less than 5 minutes to over an hour. Measures of urbanicity, low socioeconomic status, immigration status, homelessness/housing instability, and incarceration were based on public records or targeted sampling. CONCLUSIONS Although the reported assessments of SDoHs show promise, there is a need to develop and test brief but validated screening measures suitable for clinical application. Novel assessment tools, including objective assessments at individual and community levels utilizing new technology, and sophisticated psychometric evaluations for reliability, validity, and sensitivity to change with effective interventions are recommended, and suggestions for training curricula are offered.
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Affiliation(s)
- Emily T Sturm
- Department of Psychology, Colorado State University, Fort Collins, CO, USA
| | - Michael L Thomas
- Department of Psychology, Colorado State University, Fort Collins, CO, USA
| | - Anastasia G Sares
- Department of Psychology, Colorado State University, Fort Collins, CO, USA
| | | | - David Baron
- Western University of Health Sciences, CA, USA
| | - Michael T Compton
- Department of Psychiatry, Columbia University Vagelos College of Physicians & Surgeons, and New York State Psychiatric Institute, New York, NY, USA
| | - Barton W Palmer
- Department of Psychiatry, University of California, San Diego, CA, USA
- Veterans Affairs San Diego Healthcare System, Mental Illness Research, Education, and Clinical Center, San Diego, CA, USA
| | - Dylan J Jester
- Department of Psychiatry, University of California, San Diego, CA, USA
| | - Dilip V Jeste
- Department of Psychiatry, University of California, San Diego, CA, USA (Retired)
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12
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Velasco-Barbancho E, Ródenas-Perea G, Perona-Garcelán S, Senín-Calderón C, Rodríguez-Testal JF, Ruiz-Veguilla M, Crespo-Facorro B. Dissociation as a Mediator of Traumatic Childhood Experiences and Ideas of Reference. J Trauma Dissociation 2023; 24:197-213. [PMID: 36053056 DOI: 10.1080/15299732.2022.2119632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Ideas of reference (IR) - self-attributions about what happens in the social environment are a frequent phenomenon present in a wide variety of people with mental health disorders as well as in the nonclinical population. The purpose of this study was to find out the relationship between traumatic childhood experiences, IR and dissociative states in the nonclinical population, emphasizing the potential mediating role of dissociation between traumatic experiences and IR. The sample was comprised of 337 participants from the general population (58.8% women) with a mean age of 33.20 years (SD = 14.08). They filled in the Juvenile Victimization Questionnaire (JVQ), the Dissociative Experiences Scale-II (DES-II) and the Referential thinking Scale (REF). The results supported the original hypotheses and showed that the participants with higher frequency of IR reported more childhood traumatic (χ2 (2) = 64.33, p < .001, f = .39, 1- β = .99) and dissociative experiences (χ2 (2) = 50,414, p < .001, f = .38, 1- β = .99), and that dissociative states (β = .12, p < .05; 95%CI [.07, .19]; c´ = .26, p < .001), specifically absorption (β = .09, p < .05; 95% CI [.03, .15]; c´ = .26, p < .001), mediated between traumatic childhood experiences and referential thinking. It was concluded that the relationship between traumatic experiences and IR is complex and may be mediated by variables such as dissociation.
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Affiliation(s)
| | | | | | | | - Juan F Rodríguez-Testal
- Personality, Evaluation and Psychological Treatment Department, University of Seville, Seville, Spain
| | - Miguel Ruiz-Veguilla
- IBiS/ CIBERSAM, Virgen Del Rocío University Hospital/ University of Sevilla/, Seville, Spain
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Nesbit A, Dorahy MJ, Palmer R, Middleton W, Seager L, Hanna D. Dissociation as a Mediator Between Childhood Abuse and Hallucinations: An Exploratory Investigation Using Dissociative Identity Disorder and Schizophrenia Spectrum Disorders. J Trauma Dissociation 2022; 23:521-538. [PMID: 35430954 DOI: 10.1080/15299732.2022.2064579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Previous research has shown that the relationship between childhood abuse and the presence of auditory hallucinations is mediated by dissociation, specifically depersonalization and absorption. The current study assessed dissociation as a mediator of the relationship between childhood abuse and auditory hallucination frequency, characteristics and associated distress in those with dissociative identity disorder (DID; n = 50) and schizophrenia spectrum disorders (SSD; n = 49). It also tested whether dissociation mediated the relationship between childhood abuse and the presence of non-auditory hallucinations. Participants completed measures of childhood abuse, dissociation, auditory hallucination frequency, characteristics, distress, and non-auditory hallucinations. With distress associated with auditory hallucinations as the outcome, depersonalization was a mediator in the DID group. For non-auditory hallucinations, in the DID group depersonalization and amnesia were mediators between childhood abuse and the presence of visual, tactile and olfactory hallucinations. In the SSD group absorption mediated between childhood abuse and visual, olfactory and gustatory hallucinations. Results suggest that the presence of non-auditory hallucinations in DID and SSD are associated with different dissociative experiences.
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Affiliation(s)
- Amy Nesbit
- Ara Poutama Department of Corrections, Christchurch, New Zealand
| | - Martin J Dorahy
- Department of Psychology, University of Canterbury, Christchurch, New Zealand.,The Cannan Institute, Belmont Private Hospital, Brisbane, Queensland, Australia
| | - Rachael Palmer
- Ara Poutama Department of Corrections, Christchurch, New Zealand
| | - Warwick Middleton
- Department of Psychology, University of Canterbury, Christchurch, New Zealand.,The Cannan Institute, Belmont Private Hospital, Brisbane, Queensland, Australia
| | - Lenaire Seager
- The Cannan Institute, Belmont Private Hospital, Brisbane, Queensland, Australia
| | - Donncha Hanna
- School of Psychology, Queen's University of Belfast, Northern Ireland
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14
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Rey MGD, Martín LM, García FA, López FJC, López FR. Trauma infantil y psicosis: una revisión narrativa. CLÍNICA CONTEMPORÁNEA 2022. [DOI: 10.5093/cc2022a2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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15
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Sood M, Carnelley KB, Newman-Taylor K. How does insecure attachment lead to paranoia? A systematic critical review of cognitive, affective, and behavioural mechanisms. BRITISH JOURNAL OF CLINICAL PSYCHOLOGY 2022; 61:781-815. [PMID: 35178714 PMCID: PMC9542899 DOI: 10.1111/bjc.12361] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/24/2022] [Indexed: 11/29/2022]
Abstract
Background The relationship between attachment and paranoia is now well established. There is good theoretical reason and evidence to indicate that attachment style affects cognitive, affective, and behavioural processes which, in turn, contribute to the maintenance of paranoia, but this research has not been integrated. We critically and systematically review research that examines relevant cognitive, affective, and behavioural processes, which may explain how attachment insecurity leads to paranoia and constitute key targets in psychotherapeutic interventions for people with psychosis. Method We conducted three systematic searches across six databases (PsycINFO, CINAHL, Medline, Web of Science, Embase, and Google Scholar), from inception to September 2021, to investigate key cognitive, affective, and behavioural processes in the attachment–paranoia association. Results We identified a total of 1930 papers and critically reviewed 16. The literature suggests that negative self‐ and other‐beliefs, inability to defuse from unhelpful cognitions, and use of maladaptive emotion regulation strategies mediate the association between attachment insecurity and paranoia in people with psychosis/psychotic experience. Attachment‐secure people with psychosis are more likely to seek help and engage with services than attachment‐insecure people. Conclusions Attachment styles impact help‐seeking behaviours in people with psychosis and are likely to influence paranoia via self‐ and other‐beliefs, cognition fusion, and emotion regulation – these candidate mechanisms may be targeted in psychological therapy to improve clinical outcomes for people with psychosis, characterized by paranoia. Practitioner points Insecure attachment is likely to lead to paranoia via negative beliefs about self and others, cognitive fusion, and use of maladaptive emotion regulation strategies. These mechanisms can be targeted in psychotherapeutic interventions for psychosis, such as cognitive behaviour therapy, to improve clinical and recovery outcomes. People with psychosis who are attachment‐secure are more likely to seek help and engage with services than those who are attachment‐insecure (particularly avoidant). Attachment style can be assessed to predict service engagement and help‐seeking behaviours in people with psychosis. Attachment styles are important predictors of key cognitive, affective, and behavioural processes in people with psychosis. These processes can be assessed and incorporated into individualised formulations, and then targeted in therapy to effect psychotherapeutic change.
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Affiliation(s)
- Monica Sood
- School of Psychology, University of Southampton, UK
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16
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Effects of childhood trauma on facial recognition of fear in psychosis. REVISTA DE PSIQUIATRIA Y SALUD MENTAL 2022; 15:29-37. [PMID: 35144915 DOI: 10.1016/j.rpsmen.2022.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 01/09/2019] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Childhood trauma has been reported as a risk factor for psychosis. Different types of traumatic experiences in childhood could lead to different clinical manifestations in psychotic disorders. METHODS We studied differences in social cognition (emotion recognition and theory of mind) and clinical symptoms in a sample of 62 patients with psychosis (less than five years of illness) and childhood trauma, analysing performance by trauma type. RESULTS Psychotic patients with a history of childhood trauma other than sexual abuse were more capable of recognizing fear as a facial emotion (especially when facial stimuli were non-degraded) than participants with a history of sexual abuse or with no history of childhood trauma (P = .008). We also found that the group that had suffered sexual abuse did not show improvement in fear recognition when exposed to clearer stimuli, although this intergroup difference did not reach statistical significance (P = .064). We have not found other differences between abuse groups, neither in clinical symptoms (PANSS factors) nor in Hinting Task scores. CONCLUSION We have found differences in fear recognition among patients with psychotic disorders who have experienced different types of childhood trauma.
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Abstract
BACKGROUND Schizophrenia is a severe mental illness in which, despite the growing number of antipsychotics from 30 to 50% of patients remain resistant to treatment. Many resistance factors have been identified. Dissociation as a clinical phenomenon is associated with a loss of integrity between memories and perceptions of reality. Dissociative symptoms have also been found in patients with schizophrenia of varying severity. The established dispersion of the degree of dissociation in patients with schizophrenia gave us reason to look for the connection between the degree of dissociation and resistance to therapy. METHODS The type of study is correlation analysis. 106 patients with schizophrenia were evaluated. Of these, 45 with resistant schizophrenia and 60 with clinical remission. The Positive and Negative Syndrome Scale (PANSS) and Brief Psychiatric Rating Scale (BPRS) scales were used to assess clinical symptoms. The assessment of dissociative symptoms was made with the scale for dissociative experiences (DES). Statistical methods were used to analyze the differences in results between the two groups of patients. RESULTS Patients with resistant schizophrenia have a higher level of dissociation than patients in remission. This difference is significant and demonstrative with more than twice the level of dissociation in patients with resistant schizophrenia.The level of dissociation measured in patients with resistant schizophrenia is as high as the points on the DES in dissociative personality disorder. CONCLUSION Patients with resistant schizophrenia have a much higher level of dissociation than patients in clinical remission. The established difference between the two groups support to assume that resistance to the administered antipsychotics is associated with the presence of high dissociation in the group of resistant patients. These results give us explanation to think about therapeutic options outside the field of antipsychotic drugs as well as to consider different strategies earlier in the diagnostic process.
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Affiliation(s)
- Georgi Panov
- Psychiatric Clinic, University Hospital for Active Treatment "Prof. D-R Stoian Kirkovic", Trakia University, Stara Zagora, Bulgaria
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18
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Piazza GG, Iskandar G, Hennessy V, Zhao H, Walsh K, McDonnell J, Terhune DB, Das RK, Kamboj SK. Pharmacological modelling of dissociation and psychosis: an evaluation of the Clinician Administered Dissociative States Scale and Psychotomimetic States Inventory during nitrous oxide ('laughing gas')-induced anomalous states. Psychopharmacology (Berl) 2022; 239:2317-2329. [PMID: 35348804 PMCID: PMC9205822 DOI: 10.1007/s00213-022-06121-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 03/15/2022] [Indexed: 12/13/2022]
Abstract
RATIONALE A significant obstacle to an improved understanding of pathological dissociative and psychosis-like states is the lack of readily implemented pharmacological models of these experiences. Ketamine has dissociative and psychotomimetic effects but can be difficult to use outside of medical and clinical-research facilities. Alternatively, nitrous oxide (N2O) - like ketamine, a dissociative anaesthetic and NMDAR antagonist - has numerous properties that make it an attractive alternative for modelling dissociation and psychosis. However, development and testing of such pharmacological models relies on well-characterized measurement instruments. OBJECTIVES To examine the factor structures of the Clinician Administered Dissociative States Scale (CADSS) and Psychotomimetic States Inventory (PSI) administered during N2O inhalation in healthy volunteers. METHODS Secondary analyses of data pooled from three previous N2O studies with healthy volunteers. RESULTS Effect sizes for N2O-induced dissociation and psychotomimesis were comparable to effects reported in experimental studies with sub-anaesthetic ketamine in healthy volunteers. Although, like ketamine, a three-factor representation of N2O-induced dissociation was confirmed, and a more parsimonious two-factor model might be more appropriate. Bayesian exploratory factor analysis suggested that N2O-induced psychosis-like symptoms were adequately represented by two negative and two positive symptom factors. Hierarchical cluster analysis indicated minimal item overlap between the CADSS and PSI. CONCLUSION N2O and ketamine produce psychometrically similar dissociative states, although parallels in their psychosis-like effects remain to be determined. The CADSS and PSI tap largely non-overlapping experiences under N2O and we propose the use of both measures (or similar instruments) to comprehensively assess anomalous subjective states produced by dissociative NMDAR antagonists.
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Affiliation(s)
- Giulia G. Piazza
- grid.83440.3b0000000121901201Clinical Psychopharmacology Unit, Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - Georges Iskandar
- grid.83440.3b0000000121901201Clinical Psychopharmacology Unit, Research Department of Clinical, Educational and Health Psychology, University College London, London, UK ,grid.439749.40000 0004 0612 2754Department of Anaesthesia and Perioperative Medicine, University College London Hospital, London, UK
| | - Vanessa Hennessy
- grid.83440.3b0000000121901201Clinical Psychopharmacology Unit, Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - Hannah Zhao
- grid.83440.3b0000000121901201Clinical Psychopharmacology Unit, Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - Katie Walsh
- grid.83440.3b0000000121901201Clinical Psychopharmacology Unit, Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - Jeffrey McDonnell
- grid.83440.3b0000000121901201Clinical Psychopharmacology Unit, Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - Devin B. Terhune
- grid.4464.20000 0001 2161 2573Department of Psychology, Goldsmiths, University of London, London, UK
| | - Ravi K. Das
- grid.83440.3b0000000121901201Clinical Psychopharmacology Unit, Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - Sunjeev K. Kamboj
- grid.83440.3b0000000121901201Clinical Psychopharmacology Unit, Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
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19
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Chinchani AM, Menon M, Roes M, Hwang H, Allen P, Bell V, Bless J, Bortolon C, Cella M, Fernyhough C, Garrison J, Kozáková E, Larøi F, Moffatt J, Say N, Suzuki M, Toh WL, Zaytseva Y, Rossell SL, Moseley P, Woodward TS. Item-specific overlap between hallucinatory experiences and cognition in the general population: A three-step multivariate analysis of international multi-site data. Cortex 2021; 145:131-144. [PMID: 34717270 DOI: 10.1016/j.cortex.2021.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 08/01/2021] [Accepted: 08/24/2021] [Indexed: 11/16/2022]
Abstract
Hallucinatory experiences (HEs) can be pronounced in psychosis, but similar experiences also occur in nonclinical populations. Cognitive mechanisms hypothesized to underpin HEs include dysfunctional source monitoring, heightened signal detection, and impaired attentional processes. Using data from an international multisite study on non-clinical participants (N = 419), we described the overlap between two sets of variables - one measuring cognition and the other HEs - at the level of individual items. We used a three-step method to extract and examine item-specific signal, which is typically obscured when summary scores are analyzed using traditional methodologies. The three-step method involved: (1) constraining variance in cognition variables to that which is predictable from HE variables, followed by dimension reduction, (2) determining reliable HE items using split-halves and permutation tests, and (3) selecting cognition items for interpretation using a leave-one-out procedure followed by repetition of Steps 1 and 2. The results showed that the overlap between HEs and cognition variables can be conceptualized as bi-dimensional, with two distinct mechanisms emerging as candidates for separate pathways to the development of HEs: HEs involving perceptual distortions on one hand (including voices), underpinned by a low threshold for signal detection in cognition, and HEs involving sensory overload on the other hand, underpinned by reduced laterality in cognition. We propose that these two dimensions of HEs involving distortions/liberal signal detection, and sensation overload/reduced laterality may map onto psychosis-spectrum and dissociation-spectrum anomalous experiences, respectively.
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Affiliation(s)
- Abhijit M Chinchani
- BC Mental Health and Substance Use Services, Vancouver, UK; Department of Bioinformatics, University of British Columbia, Vancouver, UK
| | - Mahesh Menon
- Department of Psychiatry, University of British Columbia, Vancouver, UK
| | - Meighen Roes
- BC Mental Health and Substance Use Services, Vancouver, UK; Department of Psychology, University of British Columbia, Vancouver, UK
| | - Heungsun Hwang
- Department of Psychology, McGill University, Montreal, UK
| | - Paul Allen
- Department of Psychology, University of Roehampton, London, UK; Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Vaughan Bell
- Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - Josef Bless
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway
| | - Catherine Bortolon
- Univ. Grenoble Alpes, Laboratoire Inter-universitaire de Psychologie, University Grenoble Alpes, Grenoble, France
| | - Matteo Cella
- Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK; South London & Maudsley NHS Foundation Trust, Maudsley Hospital, London, UK
| | | | - Jane Garrison
- Department of Psychology, University of Cambridge, Cambridge, UK
| | - Eva Kozáková
- Department of Applied Neurosciences and Brain Imaging, National Institute of Mental Health, Klecany, Czech Republic; Department of Psychology, Faculty of Arts, Charles University, Prague, Czech Republic
| | - Frank Larøi
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway; Psychology and Neuroscience of Cognition Research Unit, University of Liege, Liege, Belgium; NORMENT-Norwegian Center of Excellence for Mental Disorders Research, University of Oslo, Oslo, Norway
| | - Jamie Moffatt
- School of Psychology, University of Sussex, Falmer, UK
| | - Nicolas Say
- Department of Psychology, Faculty of Arts, Charles University, Prague, Czech Republic
| | - Mimi Suzuki
- Division of Psychiatry, University College London, London, UK
| | - Wei Lin Toh
- Cognitive Neuropsychiatry Lab, Centre for Mental Health, Swinburne University, Melbourne, Australia
| | - Yuliya Zaytseva
- Department of Applied Neurosciences and Brain Imaging, National Institute of Mental Health, Klecany, Czech Republic; Department of Psychiatry and Medical Psychology, 3rd Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Susan L Rossell
- Cognitive Neuropsychiatry Lab, Centre for Mental Health, Swinburne University, Melbourne, Australia; Department of Mental Health, St Vincent's Hospital, Melbourne, VIC, Australia
| | - Peter Moseley
- Department of Psychology, Northumbria University, Newcastle-Upon Tyne, UK
| | - Todd S Woodward
- BC Mental Health and Substance Use Services, Vancouver, UK; Department of Bioinformatics, University of British Columbia, Vancouver, UK; Department of Psychiatry, University of British Columbia, Vancouver, UK.
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20
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Millman LSM, Hunter ECM, Orgs G, David AS, Terhune DB. Symptom variability in depersonalization-derealization disorder: A latent profile analysis. J Clin Psychol 2021; 78:637-655. [PMID: 34487354 DOI: 10.1002/jclp.23241] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 06/09/2021] [Accepted: 08/15/2021] [Indexed: 01/07/2023]
Abstract
OBJECTIVE Depersonalization-derealization disorder (DDD) is characterized by diverse symptomatology overlapping with anxiety and dissociative disorders, but the sources of this variability are poorly understood. This study aims to determine whether symptom heterogeneity is attributable to the presence of latent subgroups. METHOD We applied latent profile analysis to psychometric measures of anxiety, depersonalization-derealization, and dissociation in 303 DDD patients. RESULTS The analysis yielded evidence for five discrete subgroups: three of varying severity levels and two moderate-to-severe classes characterized by differential dissociative symptoms. The five classes reliably differed on several nondissociative symptoms, comorbidities, and factors precipitating their diagnosis but did not significantly differ in other symptoms including anxiety. CONCLUSION These results suggest the presence of three distinct DDD subtypes in the upper severity range that are distinguished by differential expression of detachment and compartmentalization symptoms. Further elucidation of these subtypes has potential implications for the etiology, mechanisms, and treatment of DDD.
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Affiliation(s)
| | | | - Guido Orgs
- Department of Psychology, Goldsmiths, University of London, London, UK
| | - Anthony S David
- Institute of Mental Health, University College London, London, UK
| | - Devin B Terhune
- Department of Psychology, Goldsmiths, University of London, London, UK
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21
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Kilian C, Supanya S, Probst C, Morgan C, Bärnighausen T, Kittirattanapaiboon P, Kwansanit P, Reininghaus U. Traumatic events and psychotic experiences: a nationally representative study in Thailand. Epidemiol Psychiatr Sci 2021; 30:e47. [PMID: 34100345 PMCID: PMC8192593 DOI: 10.1017/s2045796021000172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 03/02/2021] [Accepted: 03/04/2021] [Indexed: 11/22/2022] Open
Abstract
AIMS Most research exploring the link between traumatic events and psychotic experiences has focused on either Australia, Europe or North America. In this study, we expand the existing knowledge to Thailand and investigate the impact of the type and the number of traumatic events on psychotic experiences in Thailand. METHODS We used data from the nationally representative 2013 Thai National Mental Health Survey (TNMHS), including questions on traumatic events and psychotic experiences. We regressed the lifetime experience of hallucinations or delusions against the following independent variables: the experience of any traumatic event during lifetime (dichotomous; hypothesis 1); the experience of either no traumatic event, one interpersonal, one unintentional or both interpersonal and unintentional traumatic events (categorical; hypothesis 2) and the number of traumatic events experienced during lifetime (categorical; hypothesis 3). We adjusted the regression models for sociodemographic indicators and psychiatric disorders, and considered survey weights. RESULTS About 6% (95% confidence interval: 4.9-7.0) of the respondents stated that they had either hallucinatory or delusional experiences during their lifetime. The risk of reporting such experiences was more than doubled as high among respondents who had experienced at least one traumatic event during their lifetime than among those who had not yet experienced one, with higher risks for interpersonal or multiple traumatic events. Our results further indicated an increase in the risk of psychotic experiences as the number of traumatic events increased, with up to an eight-fold higher risk for people exposed to five or more traumatic events in their lifetime, compared to those with no traumatic events. CONCLUSIONS Individuals reporting interpersonal or multiple traumatic events face much higher risk of psychotic experiences. Effective and widely accessible secondary prevention programmes for people having experienced interpersonal or multiple traumatic events constitute a key intervention option.
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Affiliation(s)
- C. Kilian
- Institute of Clinical Psychology and Psychotherapy, Technical University of Dresden, Dresden, Germany
| | - S. Supanya
- Department of Mental Health, Somdet Chaopraya Institute of Psychiatry, Bangkok, Thailand
| | - C. Probst
- Heidelberg Institute of Global Health (HIGH), Medical Faculty and University Hospital, Heidelberg University, Heidelberg, Germany
- Institute of Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - C. Morgan
- ESRC Centre for Society and Mental Health, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- National Institute for Health Research (NIHR) Mental Health Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and King's College London, London, UK
| | - T. Bärnighausen
- Heidelberg Institute of Global Health (HIGH), Medical Faculty and University Hospital, Heidelberg University, Heidelberg, Germany
| | | | - P. Kwansanit
- Department of Mental Health, Somdet Chaopraya Institute of Psychiatry, Bangkok, Thailand
| | - U. Reininghaus
- ESRC Centre for Society and Mental Health, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- Department of Public Mental Health, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
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22
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Khosravi M, Bakhshani NM, Kamangar N. Dissociation as a causal pathway from sexual abuse to positive symptoms in the spectrum of psychotic disorders. BMC Psychiatry 2021; 21:266. [PMID: 34024281 PMCID: PMC8142477 DOI: 10.1186/s12888-021-03290-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 05/18/2021] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Although numerous studies have supported the role of childhood maltreatment in the etiology of psychosis, underlying mechanisms have not been well understood yet. The present study aimed to investigate the mediating role of particular forms of dissociation in the relationship between five major types of childhood abuse and psychotic symptoms among patients with schizophrenia spectrum and other psychotic disorders. METHODS In this cross-sectional correlation study, 70 first-episode psychotic patients and 70 chronic psychotic patients were selected by systematic random sampling (with the sampling interval of 3) from among inpatients and outpatients referring to Baharan Psychiatric hospital, Zahedan, Iran, and were matched based on age, gender, and education level. Moreover, 70 age-, gender-, and education level-matched community controls were recruited from hospital staff and their relatives and friends. All of the participants completed a research interview and questionnaires. Data on experiences of childhood maltreatment, psychosis, dissociation, and demographics were collected and analyzed by SPSS V25 software. RESULTS The obtained results revealed that the mean scores of sexual abuse, emotional abuse, and physical abuse were higher in psychotic patients than community controls (without any significant difference between first-episode psychotic patients and chronic psychotic patients). Furthermore, the highest mean scores of dissociative experiences belonged to chronic psychotic patients. Multiple-mediation also indicated that absorption and dissociative amnesia played a mediating role in the relationship between sexual abuse and positive symptoms. Moreover, this study demonstrated the role of physical abuse in predicting psychotic symptoms even in the absence of sexual abuse. CONCLUSIONS This study illustrated specific associations among childhood maltreatment, dissociative experiences, and psychotic symptoms in the clinical population. Thus, to provide appropriate interventions, patients with schizophrenia spectrum and other psychotic disorders were asked about a wide range of possible adverse childhood experiences and dissociative experiences. Nevertheless, further studies using prospective or longitudinal designs need to be carried out to realize the differential contribution of various forms of childhood maltreatment and their potential interactions, more precisely.
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Affiliation(s)
- Mohsen Khosravi
- Department of Psychiatry and Clinical Psychology, Zahedan University of Medical Sciences, Zahedan, Iran.
| | - Nour-Mohammad Bakhshani
- grid.488433.00000 0004 0612 8339Department of Psychology, Children and Adolescent Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Niloofar Kamangar
- grid.488433.00000 0004 0612 8339General Practitioner, Zahedan University of Medical Sciences, Zahedan, Iran
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23
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Peach N, Alvarez-Jimenez M, Cropper SJ, Sun P, Halpin E, O'Connell J, Bendall S. Trauma and the content of hallucinations and post-traumatic intrusions in first-episode psychosis. Psychol Psychother 2021; 94 Suppl 2:223-241. [PMID: 32154644 DOI: 10.1111/papt.12273] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 02/15/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Increasing evidence suggests experiences of childhood trauma may be causally related to the development of hallucinations. Cognitive theories of psychosis suggest post-traumatic intrusions to be a primary mechanism in this relationship. These theories predict that the content of hallucinations will be related to traumatic experiences; however, few studies have investigated this. This study examined the relationship between childhood trauma, the content of hallucinations, and the content of post-traumatic intrusions in a sample with first-episode psychosis. METHODS Sixty-six young people aged 15-25 experiencing a first episode of psychosis were recruited from an early intervention service. Participants completed assessments of traumatic experiences, hallucination content, and post-traumatic intrusion content using a systematic coding frame. The coding frame assessed for three types of relationships between traumatic experiences, the content of hallucinations, and the content of post-traumatic intrusions: direct relationships (hallucination content exactly matching the trauma/intrusion), thematic relationships (hallucinations with the same themes as the trauma/intrusion), and no relationship (hallucination and trauma/intrusion content unrelated). RESULTS Of those people who reported trauma and hallucinations (n = 36), 22 of these (61%) experienced post-traumatic intrusions, and of these, 16 (73%) experienced hallucinations that were directly or thematically related to their post-traumatic intrusions. Twelve people experienced hallucination content directly related to their trauma, six of whom (50%) also had intrusions relating to the same traumatic event as their hallucinations. CONCLUSIONS The finding that some people experience hallucinations and post-traumatic intrusions relating to the same traumatic event supports theories proposing a continuum of memory intrusion fragmentation. These results indicate that early intervention services for young people with psychosis should provide assessment and intervention for trauma and PTSD and should consider the impact of past traumatic events on the content of current hallucinatory experience. PRACTITIONER POINTS Trauma and post-traumatic stress disorder should be assessed in those experiencing a first episode of psychosis. Interventions for trauma should be offered in early intervention for psychosis services. In a notable proportion of people, hallucination content is related to traumatic experiences. Clinical assessment and formulation of hallucinations requires consideration of how past traumatic events may be contributing to hallucinatory experience. It is important for clinicians to have an understanding of the phenomenological differences between hallucinations and post-traumatic intrusions when conducting clinical assessments with people with comorbid psychosis and PTSD.
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Affiliation(s)
- Natalie Peach
- School of Psychological Sciences, The University of Melbourne, Vic., Australia
| | - Mario Alvarez-Jimenez
- Orygen, The National Centre of Excellence in Youth Mental Health, Melbourne, Vic., Australia.,The Centre for Youth Mental Health, The University of Melbourne, Vic., Australia
| | - Simon J Cropper
- School of Psychological Sciences, The University of Melbourne, Vic., Australia
| | - Pamela Sun
- School of Psychological Sciences, Monash University, Melbourne, Vic., Australia
| | - Emma Halpin
- Orygen, The National Centre of Excellence in Youth Mental Health, Melbourne, Vic., Australia.,The Centre for Youth Mental Health, The University of Melbourne, Vic., Australia
| | - Jessica O'Connell
- Orygen, The National Centre of Excellence in Youth Mental Health, Melbourne, Vic., Australia.,The Centre for Youth Mental Health, The University of Melbourne, Vic., Australia
| | - Sarah Bendall
- Orygen, The National Centre of Excellence in Youth Mental Health, Melbourne, Vic., Australia.,The Centre for Youth Mental Health, The University of Melbourne, Vic., Australia
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Mertens YL, Racioppi A, Sheinbaum T, Kwapil T, Barrantes-Vidal N. Dissociation and insecure attachment as mediators of the relation between childhood emotional abuse and nonclinical paranoid traits. Eur J Psychotraumatol 2021; 12:1888539. [PMID: 33968322 PMCID: PMC8079066 DOI: 10.1080/20008198.2021.1888539] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background: Research suggests dissociation and insecure attachment serve as explanatory mechanisms in the pathway from childhood trauma to paranoia. However, past work has not examined these mechanisms concurrently in nonclinical populations. Objective: The current study sought to examine dissociation and insecure attachment as parallel mediators of the association between childhood emotional abuse and paranoid traits. Furthermore, a serial mediation model with insecure attachment preceding dissociation in the explanatory pathway was explored. Methods: Eighty-nine nonclinically ascertained young adults were assessed for childhood emotional abuse, dissociation, attachment styles, and paranoid traits. Parallel and serial mediation models were tested. Results: The association of childhood emotional abuse with both interview-based and self-reported paranoid traits was significantly mediated by dissociation and preoccupied attachment. Fearful attachment was a significant mediator in the model for self-reported paranoid traits. No evidence for a serial mediation effect was found. Conclusions: The present findings extend support for dissociation and attachment insecurity as mechanisms underlying the link between childhood emotional maltreatment and paranoid traits. Longitudinal research is needed to inform whether insecure attachment contributes to dissociation along the pathways to paranoid traits.
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Affiliation(s)
- Yoki Linn Mertens
- Department of Clinical Psychology and Experimental Psychopathology, University of Groningen, Groningen, Netherlands
| | - Anna Racioppi
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona (Edifici B), Barcelona, Spain
| | - Tamara Sheinbaum
- Department of Psychology, University of Southern California, Los Angeles, CA, USA
| | - Thomas Kwapil
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL, USA.,Department of Clinical Psychology, University of North Carolina at Greensboro, Greensboro, NC, USA
| | - Neus Barrantes-Vidal
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona (Edifici B), Barcelona, Spain.,Departament de Salut Mental, Sant Pere Claver - Fundació Sanitària, Barcelona, Spain.,Center for Biomedical Research in Mental Health (CIBERSAM), Madrid, Spain
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25
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Marsh RJ, Dorahy MJ, Butler C, Middleton W, de Jong PJ, Kemp S, Huntjens R. Inter-identity amnesia for neutral episodic self-referential and autobiographical memory in Dissociative Identity Disorder: An assessment of recall and recognition. PLoS One 2021; 16:e0245849. [PMID: 33577556 PMCID: PMC7880432 DOI: 10.1371/journal.pone.0245849] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 01/09/2021] [Indexed: 11/18/2022] Open
Abstract
Amnesia is a core diagnostic criterion for Dissociative Identity Disorder (DID), however previous research has indicated memory transfer. As DID has been conceptualised as being a disorder of distinct identities, in this experiment, behavioral tasks were used to assess the nature of amnesia for episodic 1) self-referential and 2) autobiographical memories across identities. Nineteen DID participants, 16 DID simulators, 21 partial information, and 20 full information comparison participants from the general population were recruited. In the first study, participants were presented with two vignettes (DID and simulator participants received one in each of two identities) and asked to imagine themselves in the situations outlined. The second study used a similar methodology but with tasks assessing autobiographical experience. Subjectively, all DID participants reported amnesia for events that occurred in the other identity. On free recall and recognition tasks they presented a memory profile of amnesia similar to simulators instructed to feign amnesia and partial information comparisons. Yet, on tests of recognition, DID participants recognized significantly more of the event that occurred in another identity than simulator and partial information comparisons. As such, results indicate that the DID performance profile was not accounted for by true or feigned amnesia, lending support to the idea that reported amnesia may be more of a perceived than actual memory impairment.
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Affiliation(s)
- Rosemary J. Marsh
- School of Psychology, Speech and Hearing, University of Canterbury, Canterbury, New Zealand
- Department of Clinical Psychology, University of Groningen, Groningen, Netherlands
| | - Martin J. Dorahy
- School of Psychology, Speech and Hearing, University of Canterbury, Canterbury, New Zealand
- The Cannan Institute, Belmont Private Hospital, Brisbane, Australia
- * E-mail:
| | - Chandele Butler
- School of Psychology, Speech and Hearing, University of Canterbury, Canterbury, New Zealand
| | - Warwick Middleton
- School of Psychology, Speech and Hearing, University of Canterbury, Canterbury, New Zealand
- The Cannan Institute, Belmont Private Hospital, Brisbane, Australia
| | - Peter J. de Jong
- Department of Clinical Psychology, University of Groningen, Groningen, Netherlands
| | - Simon Kemp
- School of Psychology, Speech and Hearing, University of Canterbury, Canterbury, New Zealand
| | - Rafaele Huntjens
- Department of Clinical Psychology, University of Groningen, Groningen, Netherlands
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26
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Bloomfield MA, Chang T, Woodl MJ, Lyons LM, Cheng Z, Bauer‐Staeb C, Hobbs C, Bracke S, Kennerley H, Isham L, Brewin C, Billings J, Greene T, Lewis G. Psychological processes mediating the association between developmental trauma and specific psychotic symptoms in adults: a systematic review and meta-analysis. World Psychiatry 2021; 20:107-123. [PMID: 33432756 PMCID: PMC7801841 DOI: 10.1002/wps.20841] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Experiencing psychological trauma during childhood and/or adolescence is associated with an increased risk of psychosis in adulthood. However, we lack a clear knowledge of how developmental trauma induces vulnerability to psychotic symptoms. Understanding the psychological processes involved in this association is crucial to the development of preventive interventions and improved treatments. We sought to systematically review the literature and combine findings using meta-analytic techniques to establish the potential roles of psychological processes in the associations between developmental trauma and specific psychotic experiences (i.e., hallucinations, delusions and paranoia). Twenty-two studies met our inclusion criteria. We found mediating roles of dissociation, emotional dysregulation and post-traumatic stress disorder (PTSD) symptoms (avoidance, numbing and hyperarousal) between developmental trauma and hallucinations. There was also evidence of a mediating role of negative schemata, i.e. mental constructs of meanings, between developmental trauma and delusions as well as paranoia. Many studies to date have been of poor quality, and the field is limited by mostly cross-sectional research. Our findings suggest that there may be distinct psy-chological pathways from developmental trauma to psychotic phenomena in adulthood. Clinicians should carefully ask people with psychosis about their history of developmental trauma, and screen patients with such a history for dissociation, emotional dysregulation and PTSD symptoms. Well conducted research with prospective designs, including neurocognitive assessment, is required in order to fully understand the biopsychosocial mechanisms underlying the association between developmental trauma and psychosis.
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Affiliation(s)
- Michael A.P. Bloomfield
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Division of PsychiatryUniversity College LondonLondonUK,Traumatic Stress Clinic, St. Pancras Hospital, Camden and Islington NHS Foundation TrustLondonUK,NIHR University College London Hospitals Biomedical Research CentreUniversity College HospitalLondonUK,National Hospital for Neurology and NeurosurgeryUniversity College London Hospitals NHS Foundation TrustLondonUK
| | - Tinya Chang
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Division of PsychiatryUniversity College LondonLondonUK
| | - Maximillian J. Woodl
- Traumatic Stress Clinic, St. Pancras Hospital, Camden and Islington NHS Foundation TrustLondonUK
| | - Laura M. Lyons
- Traumatic Stress Clinic, St. Pancras Hospital, Camden and Islington NHS Foundation TrustLondonUK
| | - Zhen Cheng
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Division of PsychiatryUniversity College LondonLondonUK
| | - Clarissa Bauer‐Staeb
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Division of PsychiatryUniversity College LondonLondonUK,Department of PsychologyUniversity of BathBathUK
| | - Catherine Hobbs
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Division of PsychiatryUniversity College LondonLondonUK,Department of PsychologyUniversity of BathBathUK
| | - Sophie Bracke
- Translational Psychiatry Research Group, Research Department of Mental Health Neuroscience, Division of PsychiatryUniversity College LondonLondonUK
| | - Helen Kennerley
- University of OxfordOxfordUK,Oxford Centre for Cognitive TherapyWarneford Hospital, Oxford Health NHS Foundation TrustOxfordUK
| | - Louise Isham
- Oxford Centre for Cognitive TherapyWarneford Hospital, Oxford Health NHS Foundation TrustOxfordUK,Department of PsychiatryUniversity of OxfordOxfordUK
| | - Chris Brewin
- Research Department of Clinical, Health and Educational PsychologyUniversity College LondonLondonUK
| | - Jo Billings
- Division of PsychiatryUniversity College LondonLondonUK
| | - Talya Greene
- Division of PsychiatryUniversity College LondonLondonUK,Community Mental Health DepartmentUniversity of HaifaHaifaIsrael
| | - Glyn Lewis
- Division of PsychiatryUniversity College LondonLondonUK
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27
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Weitkämper A, Kellner M, Iffland JR, Driessen M, Kley H, Neuner F, Iffland B. Childhood Maltreatment in Individuals With Schizophrenia Spectrum Disorders: The Impact of Cut-Off Scores on Prevalence Rates. Front Psychiatry 2021; 12:692492. [PMID: 34295277 PMCID: PMC8291124 DOI: 10.3389/fpsyt.2021.692492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/08/2021] [Indexed: 11/17/2022] Open
Abstract
Childhood maltreatment is a common phenomenon in various psychiatric disorders. Accordingly, patients with disorders from the schizophrenia spectrum (SSD) appear to have high prevalence rates of childhood maltreatment. However, the interpretation and comparability of prevalence rates is impeded by methodological weaknesses and differences such as measures and thresholds used in previous studies. Therefore, we aimed to provide and compare systematically captured data on prevalence rates of all common types of childhood maltreatment in patients with SSD using a standardized and well-established questionnaire and the most frequently used thresholds. The sample consisted of 48 patients with a primary diagnosis of SSD. 58.3-77.1% of the sample experienced at least one type of childhood maltreatment. Prevalence rates for physical abuse, physical neglect, and emotional abuse were dependent on the thresholds used, while equal rates were found for emotional neglect and sexual abuse. Physical neglect (46-67%), and emotional abuse (44-48%) were most commonly reported, followed by emotional neglect (38%), physical abuse (25-38%), and sexual abuse (25%). Additionally, high levels of peer victimization were reported by SSD patients. It appears that childhood maltreatment is a common phenomenon in SSD, even though methodological details, especially cut-off scores, have a substantial impact on the prevalence rates that are determined. Therefore, the methodology of studies should be closely examined when drawing conclusions from presented prevalence rates.
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Affiliation(s)
- Angelina Weitkämper
- Department of Clinical Psychology and Psychotherapy, Bielefeld University, Bielefeld, Germany
| | - Michael Kellner
- Department of Psychiatry, Psychotherapy and Psychosomatics, Hospital Herford, Herford, Germany.,Department of Psychiatry and Psychotherapy, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | | | - Martin Driessen
- Clinic of Psychiatry and Psychotherapy Bethel, Bielefeld, Germany
| | - Hanna Kley
- Department of Clinical Psychology and Psychotherapy, Outpatient Clinic, Bielefeld University, Bielefeld, Germany
| | - Frank Neuner
- Department of Clinical Psychology and Psychotherapy, Bielefeld University, Bielefeld, Germany
| | - Benjamin Iffland
- Department of Clinical Psychology and Psychotherapy, Bielefeld University, Bielefeld, Germany
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28
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Vers une psychologie janétienne des psychoses ? EUROPEAN JOURNAL OF TRAUMA & DISSOCIATION 2020. [DOI: 10.1016/j.ejtd.2018.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Alameda L, Rodriguez V, Carr E, Aas M, Trotta G, Marino P, Vorontsova N, Herane-Vives A, Gadelrab R, Spinazzola E, Di Forti M, Morgan C, Murray RM. A systematic review on mediators between adversity and psychosis: potential targets for treatment. Psychol Med 2020; 50:1966-1976. [PMID: 32744193 DOI: 10.1017/s0033291720002421] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Various psychological and biological pathways have been proposed as mediators between childhood adversity (CA) and psychosis. A systematic review of the evidence in this domain is needed. Our aim is to systematically review the evidence on psychological and biological mediators between CA and psychosis across the psychosis spectrum. This review followed PRISMA guidelines. Articles published between 1979 and July 2019 were identified through a literature search in OVID (PsychINFO, Medline and Embase) and Cochrane Libraries. The evidence by each analysis and each study is presented by group of mediator categories found. The percentage of total effect mediated was calculated. Forty-eight studies were included, 21 in clinical samples and 27 in the general population (GP) with a total of 82 352 subjects from GP and 3189 from clinical studies. The quality of studies was judged as 'fair'. Our results showed (i) solid evidence of mediation between CA and psychosis by negative cognitive schemas about the self, the world and others (NS); by dissociation and other post-traumatic stress disorder symptoms; and through an affective pathway in GP but not in subjects with disorder; (iii) lack of studies exploring biological mediators. We found evidence suggesting that various overlapping and not competing pathways involving post-traumatic and mood symptoms, as well as negative cognitions contribute partially to the link between CA and psychosis. Experiences of CA, along with relevant mediators should be routinely assessed in patients with psychosis. Evidence testing efficacy of interventions targeting such mediators through cognitive behavioural approaches and/or pharmacological means is needed in future.
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Affiliation(s)
- Luis Alameda
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- Service of General Psychiatry, Treatment and Early Intervention in Psychosis Program, Lausanne University Hospital (CHUV), CH-1008Lausanne, Switzerland
- Department of Psychiatry, Hospital Universitario Virgen del Rocío, Universidad de Sevilla, Spain
- Instituto de Investigacion Sanitaria de Sevilla, IBiS, Spain
| | - Victoria Rodriguez
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Ewan Carr
- Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Monica Aas
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Giulia Trotta
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Paolo Marino
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Natasha Vorontsova
- Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Andrés Herane-Vives
- Department of Psychological Medicine, Centre for Affective Disorders, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- Departamento de Clínicas, Facultad de Medicina, Universidad Católica del Norte, Coquimbo, Chile
| | - Romayne Gadelrab
- Department of Psychological Medicine, Centre for Affective Disorders, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Edoardo Spinazzola
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- Psychiatry Residency Training Program, Faculty of Medicine and Psychology, Sapienza University of Rome, Italy
| | - Marta Di Forti
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Craig Morgan
- ESRC Centre for Society and Mental Health, King's College London, UK
| | - Robin M Murray
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
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30
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Wearne D, Curtis GJ, Melvill-Smith P, Orr KG, Mackereth A, Rajanthiran L, Hood S, Choy W, Waters F. Exploring the relationship between auditory hallucinations, trauma and dissociation. BJPsych Open 2020; 6:e54. [PMID: 32431265 PMCID: PMC7345666 DOI: 10.1192/bjo.2020.31] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND It is clinically imperative to better understand the relationship between trauma, auditory hallucinations and dissociation. The personal narrative of trauma has enormous significance for each individual and is also important for the clinician, who must use this information to decide on a diagnosis and treatment approach. AIMS To better understand whether dissociation contributes in a significant way to hallucinations in individuals with and without trauma histories. METHOD Three groups of participants with auditory hallucinations were recruited, with diagnoses of: schizophrenia (without trauma) (n = 18), post-traumatic stress disorder (PTSD, n = 27) and comorbid schizophrenia and PTSD (SCZ+PTSD), n = 26). Clinician-administered measures included the PTSD Symptoms Scale Interview (PSSI-5), the Clinician-Administered Dissociative States Scale (CADSS) and the Psychotic Symptom Rating Scales (PSYRATS). RESULTS Dissociative symptoms were significantly higher in participants with trauma histories (PTSD and SCZ+PTSD groups) and significantly correlated with hallucinations in trauma-exposed participants, but not in participants with schizophrenia (without trauma history). Hallucination severity was correlated with the CADSS amnesia subscale score, but depersonalisation and derealisation were not. CONCLUSIONS Dissociation may be a mechanism in trauma-exposed individuals who hear voices, but it does not explain all hallucinatory experiences. The SCZ+PTSD group were in an intermediary position between schizophrenia and PTSD on dissociative and hallucination measures. The PTSD and SCZ+PTSD groups experienced dissociative phenomena much more frequently than the schizophrenia group, with a significant trend towards the amnesia subtype of dissociation.
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Affiliation(s)
- Deborah Wearne
- School of Medicine, University of Western Australia, Perth, Australia
| | - Guy J Curtis
- School of Psychological Science, University of Western Australia, Perth, Australia
| | | | | | | | | | - Sean Hood
- Faculty of Health and Medical Sciences, University of Western Australia, Perth, Australia
| | - Winston Choy
- School of Medicine, University of Western Australia, Perth, Australia
| | - Flavie Waters
- School of Psychological Sciences, University of Western Australia, Perth; and Clinical Research Centre, Graylands Campus, North Metropolitan Health Service, Mental Health, Perth, Australia
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31
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Shinn AK, Wolff JD, Hwang M, Lebois LAM, Robinson MA, Winternitz SR, Öngür D, Ressler KJ, Kaufman ML. Assessing Voice Hearing in Trauma Spectrum Disorders: A Comparison of Two Measures and a Review of the Literature. Front Psychiatry 2020; 10:1011. [PMID: 32153431 PMCID: PMC7050446 DOI: 10.3389/fpsyt.2019.01011] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 12/20/2019] [Indexed: 11/13/2022] Open
Abstract
Voice hearing (VH) can occur in trauma spectrum disorders (TSD) such as posttraumatic stress disorder (PTSD) and dissociative disorders. However, previous estimates of VH among individuals with TSD vary widely. In this study, we sought to better characterize the rate and phenomenology of VH in a sample of 70 women with TSD related to childhood abuse who were receiving care in a specialized trauma program. We compared the rate of VH within our sample using two different measures: 1) the auditory hallucination (AH) item in the Structured Clinical Interview for DSM-IV-TR (SCID), and 2) the thirteen questions involving VH in the Multidimensional Inventory of Dissociation (MID), a self-report questionnaire that comprehensively assesses pathological dissociation. We found that 45.7% of our sample met threshold for SCID AH, while 91.4% met criteria for MID VH. Receiver operating characteristics (ROC) analyses showed that while SCID AH and MID VH items have greater than chance agreement, the strength of agreement is only moderate, suggesting that SCID and MID VH items measure related but not identical constructs. Thirty-two patients met criteria for both SCID AH and at least one MID VH item ("unequivocal VH"), 32 for at least one MID VH item but not SCID AH ("ambiguous VH"), and 6 met criteria for neither ("unequivocal non-VH"). Relative to the ambiguous VH group, the unequivocal VH group had higher dissociation scores for child voices, and higher mean frequencies for child voices and Schneiderian voices. Our findings suggest that VH in women with TSD related to childhood abuse is common, but that the rate of VH depends on how the question is asked. We review prior studies examining AH and/or VH in TSD, focusing on the measures used to ascertain these experiences, and conclude that our two estimates are consistent with previous studies that used comparable instruments and patient samples. Our results add to growing evidence that VH-an experience typically considered psychotic or psychotic-like-is not equivalent to having a psychotic disorder. Instruments that assess VH apart from psychotic disorders and that capture their multidimensional nature may improve identification of VH, especially among patients with non-psychotic disorders.
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Affiliation(s)
- Ann K. Shinn
- Psychotic Disorders Division, McLean Hospital, Belmont, MA, United States
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
| | - Jonathan D. Wolff
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
- Dissociative Disorders and Trauma Research Program, McLean Hospital, Belmont, MA, United States
| | - Melissa Hwang
- Psychotic Disorders Division, McLean Hospital, Belmont, MA, United States
| | - Lauren A. M. Lebois
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
- Dissociative Disorders and Trauma Research Program, McLean Hospital, Belmont, MA, United States
- Neurobiology of Fear Laboratory, McLean Hospital, Belmont, MA, United States
| | - Mathew A. Robinson
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
- Dissociative Disorders and Trauma Research Program, McLean Hospital, Belmont, MA, United States
| | - Sherry R. Winternitz
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
- Dissociative Disorders and Trauma Research Program, McLean Hospital, Belmont, MA, United States
| | - Dost Öngür
- Psychotic Disorders Division, McLean Hospital, Belmont, MA, United States
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
| | - Kerry J. Ressler
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
- Neurobiology of Fear Laboratory, McLean Hospital, Belmont, MA, United States
| | - Milissa L. Kaufman
- Department of Psychiatry, Harvard Medical School, Boston, MA, United States
- Dissociative Disorders and Trauma Research Program, McLean Hospital, Belmont, MA, United States
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Baryshnikov I, Aaltonen K, Suvisaari J, Koivisto M, Heikkinen M, Joffe G, Isometsä E. Features of borderline personality disorder as a mediator of the relation between childhood traumatic experiences and psychosis-like experiences in patients with mood disorder. Eur Psychiatry 2020; 49:9-15. [PMID: 29353179 DOI: 10.1016/j.eurpsy.2017.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 11/29/2017] [Accepted: 12/01/2017] [Indexed: 10/18/2022] Open
Abstract
AbstractBackgroundPsychosis-like experiences (PEs) are common in patients with non-psychotic disorders. Several factors predict reporting of PEs in mood disorders, including mood-associated cognitive biases, anxiety and features of borderline personality disorder (BPD). Childhood traumatic experiences (CEs), often reported by patients with BPD, are an important risk factor for mental disorders. We hypothesized that features of BPD may mediate the relationship between CEs and PEs. In this study, we investigated the relationships between self-reported PEs, CEs and features of BPD in patients with mood disorders.MethodsAs part of the Helsinki University Psychiatric Consortium study, McLean Screening Instrument (MSI), Community Assessment of Psychic Experiences (CAPE-42) and Trauma and Distress Scale (TADS) were filled in by patients with mood disorders (n = 282) in psychiatric care. Correlation coefficients between total scores of scales and their dimensions were estimated, multiple regression and mediation analyses were conducted.ResultsTotal scores of MSI correlated strongly with scores of the CAPE-42 dimension “frequency of positive symptoms” (rho = 0.56; p ≤ 0.001) and moderately with scores of TADS (rho = 0.4; p ≤ 0.001). Total score of MSI and its dimension “cognitive symptoms”, including identity disturbance, distrustfulness and dissociative symptoms, fully mediated the relation between TADS and CAPE-42. Each cognitive symptom showed a partial mediating role (dissociative symptoms 43% (CI = 25–74%); identity disturbance 40% (CI = 30-73%); distrustfulness 18% (CI = 12-50%)).ConclusionsSelf-reported cognitive-perceptual symptoms of BPD fully mediate, while affective, behavioural and interpersonal symptoms only partially mediate the relationships between CEs and PEs. Recognition of co-morbid features of BPD in patients with mood disorders reporting PEs is essential.
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Sun P, Alvarez-Jimenez M, Lawrence K, Simpson K, Peach N, Bendall S. Investigating the prevalence of dissociative disorders and severe dissociative symptoms in first episode psychosis. Early Interv Psychiatry 2019; 13:1366-1372. [PMID: 30585427 DOI: 10.1111/eip.12773] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/27/2018] [Accepted: 11/29/2018] [Indexed: 11/24/2022]
Abstract
AIM Increasing evidence suggests that childhood trauma and dissociation are associated with psychotic symptoms and disorders. Significant rates of dissociative disorders and clinical levels of dissociative symptoms are found in chronic schizophrenia. To date, no studies have examined the prevalence of these in a first episode psychosis (FEP) group. This study aimed to investigate the prevalence of dissociative disorders and symptoms in a FEP sample as well as the prevalence of severe dissociative symptoms in those with or without experiences of childhood trauma. METHODS Sixty-six young people with FEP completed a research interview which included the structured clinical interview for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) Axis I Disorders, Childhood Trauma Questionnaire and the Structured Clinical Interview for DSM-IV Dissociative Disorders-Revised. RESULTS Dissociative symptoms at clinical levels were found in 36.4% of the sample. Furthermore, 13.6% of the sample met diagnostic criteria for a lifetime dissociative disorder. Significant differences in the frequency of clinical dissociative symptoms between those with or without childhood trauma were also found. CONCLUSIONS Dissociative symptoms should be routinely assessed for in early intervention settings, especially in cases where childhood trauma is disclosed or suspected. Where present, dissociative symptoms should also be incorporated into subsequent case formulation and treatment planning.
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Affiliation(s)
- Pamela Sun
- School of Psychological Sciences, Monash University, Clayton, Victoria, Australia
| | - Mario Alvarez-Jimenez
- Orygen, The National Centre of Excellence in Youth Mental Health, Parkville, Victoria, Australia.,The Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Katherine Lawrence
- School of Psychological Sciences, Monash University, Clayton, Victoria, Australia
| | - Katrina Simpson
- School of Psychological Sciences, Monash University, Clayton, Victoria, Australia
| | - Natalie Peach
- School of Psychological Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Sarah Bendall
- Orygen, The National Centre of Excellence in Youth Mental Health, Parkville, Victoria, Australia.,The Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
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Bortolon C, Raffard S. Affective and cognitive factors associated with hallucination proneness in the general population: the role of shame and trauma-related intrusions. Cogn Neuropsychiatry 2019; 24:406-420. [PMID: 31549568 DOI: 10.1080/13546805.2019.1670152] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Introduction: Feelings of shame may be an important factor implicated in the onset and maintenance of hallucination (or hearing voices). Shame has been shown to increase trauma-related intrusions and avoidance and may reinforce negative beliefs about the self, which in turn may contribute to hallucinations in clinical and non-clinical populations. To our knowledge, no study has so far explored the role of shame in hallucination-proneness. Therefore, the main goal of the present study is to explore the mediation role of shame, trauma-related intrusions and avoidance in the association between childhood trauma and hallucination-proneness.Methods: Self-report questionnaires were used to assess past traumatic experiences, trauma-related symptoms, shame, and hallucination proneness in 175 participants from the general population.Results: Mediation analyses (joint-significance test and Monte Carlo test) showed that both shame and intrusions mediated the association between childhood trauma and hallucination-proneness.Conclusions: Our results reinforce the importance of considering previous experiences of trauma and trauma-related symptoms, including feelings of shame in individuals experiencing hallucinations. Moreover, this study reinforces previous studies showing some preliminary evidence that compassion-focused therapy, whose primary goal is to reduce shame by increasing self-compassion, could have a significant effect on voices whose content is hostile.
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Affiliation(s)
- Catherine Bortolon
- Laboratoire Inter-universitaire de Psychologie: Personnalité, Cognition et Changement Social, Université Grenoble Alpes, Saint Martin d'Hères, France
| | - Stéphane Raffard
- Service Universitaire de Psychiatrie Adulte, Hôpital La Colombière, Centre Hospitaliere Universitaire de Montpellier, Montpellier, France.,Laboratoire Epsylon, Montpellier, France
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Thomas S, Höfler M, Schäfer I, Trautmann S. Childhood maltreatment and treatment outcome in psychotic disorders: a systematic review and meta-analysis. Acta Psychiatr Scand 2019; 140:295-312. [PMID: 31357235 DOI: 10.1111/acps.13077] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/24/2019] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Childhood maltreatment (CM) plays an important role in the aetiology and course of psychotic disorders and is associated with characteristics that could be relevant for treatment. We aimed to conduct a systematic review and meta-analysis on the association between CM and treatment outcome in psychotic disorders. METHODS Treatment outcome was defined as change in psychotic symptoms or in social or occupational functioning between first and last reported measurement in the course of a pharmacological and/or psychological treatment. RESULTS Twelve treatment results from seven studies (636 patients, average treatment duration: 59.2 weeks) were included. CM was related to poorer treatment outcomes in psychotic disorders (OR = 1.51, 95% CI = [1.08, 2.10]). There is evidence that this association might increase with illness duration and increasing age and might be stronger in schizophrenia samples. CONCLUSIONS Childhood maltreatment is highly understudied with regard to treatment outcome in psychotic disorders. The need for more studies is emphasized by the fact that this meta-analysis reveals evidence for a poorer treatment response in patients with CM. If this association is confirmed, the identification of patients with CM and the consideration of associated clinical and biological conditions could contribute to improve treatment outcome in psychotic disorders.
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Affiliation(s)
- S Thomas
- Institute of Clinical Psychology and Psychotherapy, Technische Universität Dresden, Dresden, Germany
| | - M Höfler
- Institute of Clinical Psychology and Psychotherapy, Technische Universität Dresden, Dresden, Germany
| | - I Schäfer
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Center for Interdisciplinary Addiction Research, University of Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - S Trautmann
- Institute of Clinical Psychology and Psychotherapy, Technische Universität Dresden, Dresden, Germany.,Department of Psychology, Medical School Hamburg, Hamburg, Germany
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Butler C, Dorahy MJ, Middleton W. The Detachment and Compartmentalization Inventory (DCI): An assessment tool for two potentially distinct forms of dissociation. J Trauma Dissociation 2019; 20:526-547. [PMID: 31070513 DOI: 10.1080/15299732.2019.1597809] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
While evidence suggests a division between two qualitatively distinct forms of dissociation, no scale has been specifically designed to differentiate between them. This study describes the development and validation of the Detachment and Compartmentalization Inventory (DCI). The DCI was developed from dissociation theory, 29 existing dissociation scales and expert opinion. An initial pilot study was conducted which assessed readability, explored validity and reduced items before the DCI was administered online to 89 nonclinical and 105 clinical participants. The Dissociative Experiences Scale (DES), Somatoform Dissociation Questionnaire (SDQ), and Mindfulness Attention Awareness Scale (MAAS) were included in the survey battery. The DCI exhibited good internal reliability, discriminant validity, convergent validity, construct validity and concurrent validity. The final version containing 22-items, is self-administered, grounded in the theoretical literature and supported by initial psychometric evaluation. It has 10 items assessing compartmentalization, 10 items assessing detachment and two items examining valid responding. The DCI could detect compartmentalization and detachment, and was designed for clinical research and for screening patients.
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Affiliation(s)
- Chandele Butler
- Department of Psychology, University of Canterbury , Christchurch , New Zealand
| | - Martin J Dorahy
- Department of Psychology, University of Canterbury , Christchurch , New Zealand.,The Cannan Institute, Belmont Private Hospital , Brisbane , Australia
| | - Warwick Middleton
- Department of Psychology, University of Canterbury , Christchurch , New Zealand.,The Cannan Institute, Belmont Private Hospital , Brisbane , Australia
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Comparing the Role of Aberrant Salience and Dissociation in the Relation between Cumulative Traumatic Life Events and Psychotic-Like Experiences in a Multi-Ethnic Sample. J Clin Med 2019; 8:jcm8081223. [PMID: 31443188 PMCID: PMC6722767 DOI: 10.3390/jcm8081223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 07/30/2019] [Accepted: 08/13/2019] [Indexed: 12/16/2022] Open
Abstract
Exposure to traumatic life events (TLE) is a risk factor for psychosis. Yet, a dearth of studies examines factors linking TLE to psychosis, while considering differences in TLE frequency. This study investigated dissociation and aberrant salience as mediators and moderators of the relation between three TLE groups (none, 1–3 TLE and 4+ TLE) and psychotic-like experiences (PLE) in a multi-ethnic sample of 816 emerging adults. The participants completed self-report inventories of PLE (Prodromal Questionnaire), TLE (Life Events Checklist), dissociative experiences (Dissociative Symptoms Scale), and aberrant salience (Aberrant Salience Inventory). As expected, groups with higher TLE frequency endorsed higher PLE. Parallel mediation models indicated that, while aberrant salience mediated the relation between both levels of cumulative traumatic experiences (1–3 TLE and 4+ TLE) and PLE, dissociation only mediated the relation between exposure to at least four different traumatic experiences and PLE. The moderation results showed that risk of PLE was highest among individuals with 1–3 TLE who endorsed dissociation. Our results suggest that, while aberrant salience processing explains why TLE may relate to higher psychosis risk, dissociation’s role in this relation is dependent on the number of different TLE exposures.
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Akbey ZY, Yildiz M, Gündüz N. Is There Any Association Between Childhood Traumatic Experiences, Dissociation and Psychotic Symptoms in Schziophrenic Patients? Psychiatry Investig 2019; 16:346-354. [PMID: 31132838 PMCID: PMC6539262 DOI: 10.30773/pi.2019.02.10.2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 02/10/2019] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE The aim of this study was to investigate the rates childhood traumatic experiences (CTEs) of schizophrenia patients and to examine relationship between childhood traumatic experiences, dissociation and psychotic symptoms. METHODS One hundred schizophrenia patients who had 5 or 5 points below in Clinical Global Impression-Severity (CGI-S) and who were not in active psychotic episode and 50 healthy siblings who grew up in the same environment with the patients were included to the study. Structured Clinical Interview for DSM IV, Scale for the Assessment of Positive Symptoms, Scale for the Assessment of Negative Symptoms, Dissociative Experiences Scale (DES), CGI-S, Global Assessment of Functioning Scale and Childhood Trauma Questionnaire (CTQ-28) applied to the patients. RESULTS Childhood abuse subscales and DES scores were statistically higher in the patient group (p<0.001). We determined moderately significant positive correlation between CTQ-28 and DES. We determined moderately significant positive correlation between CTQ total scores and persecutory delusions, delusions of reference, ability to feel intimacy and closeness; relationship with friends and peers. Also, there was a significant positive correlation between persecutory delusions and CTQ-total, DES-total and all subscales of CTQ-28. CONCLUSION Clinicians should inquire about CTEs to develop comprehensive formulations and treatment plans among schizophrenia.
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Affiliation(s)
- Zeynep Yildiz Akbey
- Department of Psychiatry, Faculty of Medicine, Kutahya Health Sciences University, Kutahya, Turkey
| | - Mustafa Yildiz
- Department of Psychiatry, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Nermin Gündüz
- Department of Psychiatry, Faculty of Medicine, Kutahya Health Sciences University, Kutahya, Turkey
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Brañas A, Lahera G, Barrigón ML, Canal-Rivero M, Ruiz-Veguilla M. Effects of childhood trauma on facial recognition of fear in psychosis. REVISTA DE PSIQUIATRIA Y SALUD MENTAL 2019; 15:S1888-9891(19)30022-9. [PMID: 30872020 DOI: 10.1016/j.rpsm.2019.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 12/14/2018] [Accepted: 01/09/2019] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Childhood trauma has been reported as a risk factor for psychosis. Different types of traumatic experiences in childhood could lead to different clinical manifestations in psychotic disorders. MATERIAL AND METHODS We studied differences in social cognition (emotion recognition and theory of mind) and clinical symptoms in a sample of 62 patients with psychosis (less than 5 years of illness) and childhood trauma, analysing performance by trauma type. RESULTS Psychotic patients with a history of childhood trauma other than sexual abuse were more capable of recognizing fear as a facial emotion (especially when facial stimuli were non-degraded) than participants with a history of sexual abuse or with no history of childhood trauma (P=.008). We also found that the group that had suffered sexual abuse did not show improvement in fear recognition when exposed to clearer stimuli, although this intergroup difference did not reach statistical significance (P=.064). We have not found other differences between abuse groups, neither in clinical symptoms (PANSS factors) nor in Hinting Task scores. CONCLUSION We have found differences in fear recognition among patients with psychotic disorders who have experienced different types of childhood trauma.
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Affiliation(s)
- Antía Brañas
- Departamento de Psiquiatría, Complexo Hospitalario Universitario de Ourense, Ourense, España; Facultad de Medicina, Universidad de Alcalá, Madrid, España
| | - Guillermo Lahera
- Facultad de Medicina, Universidad de Alcalá, Madrid, España; CIBERSAM, Madrid, España
| | - María Luisa Barrigón
- Departamento de Psiquiatría, IIS-Fundación Jiménez Díaz, Madrid, España; Universidad Autónoma, Madrid, España
| | - Manuel Canal-Rivero
- Departamento de Psiquiatría, Hospital Universitario Germans Trías i Pujol, Badalona, Barcelona, España
| | - Miguel Ruiz-Veguilla
- Grupo Psicosis y Neurodesarrollo, Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Unidad de Hospitalización de Salud Mental, Sevilla, España.
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Traumatic life event exposure and psychotic-like experiences: A multiple mediation model of cognitive-based mechanisms. Schizophr Res 2019; 205:15-22. [PMID: 29463456 PMCID: PMC6098745 DOI: 10.1016/j.schres.2018.02.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/31/2018] [Accepted: 02/05/2018] [Indexed: 12/15/2022]
Abstract
Several cognitive mechanisms have been proposed to account for the relationship between exposure to traumatic life events (TLEs) and the entire psychosis spectrum. However, only few of these mechanisms have been empirically tested and those that have been tested have not considered multiple mechanisms simultaneously. The purpose of this study was to examine whether perceived stress, dissociation, negative self-schemas, negative other-schemas, and/or external locus of control mediated the association between TLEs and psychotic-like experiences (PLEs). An undergraduate sample of 945 individuals completed a battery of self-report questionnaires. We found significant indirect effects from TLE exposure to PLEs through perceived stress, dissociation, external locus of control, negative self-schemas, and negative other-schemas. When controlling for comorbid psychological symptoms, only the indirect effect from TLE exposure to PLEs through dissociation continued to be significant. Targeting stress sensitivity, maladaptive schemas, dissociative tendencies, and externalizing attributional styles may prove useful in the amelioration of risk for various psychopathologies (e.g., mood, psychosis) in the aftermath of TLE exposure. Findings underscore the importance of targeting trauma-related cognitions in the prevention or reduction of psychotic-like experiences or disorders.
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41
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Schalinski I, Breinlinger S, Hirt V, Teicher MH, Odenwald M, Rockstroh B. Environmental adversities and psychotic symptoms: The impact of timing of trauma, abuse, and neglect. Schizophr Res 2019; 205:4-9. [PMID: 29141785 DOI: 10.1016/j.schres.2017.10.034] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/20/2017] [Accepted: 10/23/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Trauma and adverse childhood experiences (ACE) occur more often in mental illness, including psychosis, than in the general population. Individuals with psychosis (cases) report a higher number and severity (dose) of adversities than healthy controls. While a dose-dependent increase of adversities has been related to more severe psychopathology, the role of type and timing is still insufficiently understood on the exacerbation of positive and negative psychotic symptoms. Moreover, dissociative symptoms were examined as potential mediator between adversities and severity of psychotic symptoms. METHODS Exposure to adversities were assessed by interviews in n=180 cases and n=70 controls. In cases, symptom severities were obtained for psychotic symptoms and dissociation. Conditioned random forest regression determined the importance of type and timing of ACE for positive and negative symptom severity, and mediator analyses evaluated the role of dissociative symptoms in the relationship between adversities and psychotic symptoms. RESULTS Cases experienced substantially more abuse and neglect than controls. Adversities were related in a dose-dependent manner to psychotic disorder. An array of adversities was associated with more severe positive symptoms, while the conditioned random forest regression depicted neglect at age 10 as the most important predictor. Dissociative symptoms mediated the small relation of trauma load in childhood and positive symptoms. CONCLUSION The role of trauma and ACE on psychotic symptoms can be specified by neglect during frontocortical development in the exacerbation of positive symptoms. The mediating role of dissociation is restricted to the relation of childhood trauma and positive symptoms.
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Affiliation(s)
| | - Susanne Breinlinger
- Department of Psychology, University of Konstanz, Germany; Center for Psychiatry Reichenau, Germany
| | - Vanessa Hirt
- Department of Psychology, University of Konstanz, Germany
| | - Martin H Teicher
- Department of Psychiatry, Harvard Medical School, Boston, MA, USA; Developmental Biopsychiatry Research Program, McLean Hospital, Belmont, MA, USA
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Rafiq S, Campodonico C, Varese F. The relationship between childhood adversities and dissociation in severe mental illness: a meta-analytic review. Acta Psychiatr Scand 2018; 138:509-525. [PMID: 30338524 DOI: 10.1111/acps.12969] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/30/2018] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Several studies have observed that dissociative experiences are frequently reported by individuals with severe mental illness (SMI), especially amongst patients that report a history of adverse/traumatic life experiences. This review examined the magnitude and consistency of the relationship between childhood adversity (sexual abuse, physical abuse, emotional abuse, neglect, bullying, natural disasters and mass violence) and dissociation across three SMI diagnostic groups: schizophrenia, bipolar disorder and personality disorders. METHOD A database search (EMBASE, PubMed and PsycINFO) identified 30 eligible empirical studies, comprising of 2199 clinical participants. Effect sizes representing the relationship between exposure to childhood adversity and dissociation were examined and integrated using a random-effects meta-analysis. RESULTS The results indicated that exposure to childhood trauma was associated with heightened dissociation across SMIs. Positive significant associations were also found between specific childhood adversities and dissociation, with aggregated effect sizes in the small-to-moderate range. CONCLUSION These findings support calls for the routine assessment of traumatic experiences in clients with SMIs presenting with dissociative symptoms and the provision of adequate therapeutic support (e.g. trauma-focused therapies) to manage and resolve these difficulties.
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Affiliation(s)
- S Rafiq
- School of Health Sciences, Division of Psychology and Mental Health, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - C Campodonico
- School of Health Sciences, Division of Psychology and Mental Health, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - F Varese
- School of Health Sciences, Division of Psychology and Mental Health, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK.,Complex Trauma and Resilience Research Unit, Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
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43
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Pugh M, Waller G, Esposito M. Childhood trauma, dissociation, and the internal eating disorder 'voice'. CHILD ABUSE & NEGLECT 2018; 86:197-205. [PMID: 30326368 DOI: 10.1016/j.chiabu.2018.10.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 08/24/2018] [Accepted: 10/08/2018] [Indexed: 06/08/2023]
Abstract
Many individuals diagnosed with eating disorders describe their disorder as being represented by an internal 'voice'. In line with cognitive models of voice-hearing, previous research has identified associations between voice appraisals and eating psychopathology in anorexia nervosa. Whether these findings generalise to other eating disorder subtypes remains unknown. The aetiology of the internal eating disorder voice also remains unclear. Traumatic-dissociative models of voice-hearing, which link such experiences to decontexualised material arising from early traumatic events, might also be relevant to eating disorder groups. To determine whether cognitive models of trauma and voice-hearing apply across eating disorder subtypes, 85 individuals fulfilling ICD-10 criteria for an eating disorder completed self-report measures regarding eating disorder cognitions, voice-related appraisals, childhood trauma, and dissociation. The relative power of the eating disorder voice was found to be positively associated with experiences of childhood emotional abuse, and this relationship was partly mediated by dissociation. In addition, eating disorder voices appraised as powerful and benevolent predicted more negative attitudes towards eating across diagnostic groups, but were unrelated to disordered eating behaviours or weight. These findings suggest that the eating disorder voice plays a meaningful role in eating pathology across diagnoses and that this experience might be related, in part, to experiences of childhood maltreatment. Therapeutic implications are discussed.
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Affiliation(s)
- Matthew Pugh
- Vincent Square Eating Disorders Service, 1 Nightingale Place, London, SW10 9NG, UK.
| | - Glenn Waller
- Department of Psychology, University of Sheffield, UK
| | - Mirko Esposito
- Centre for Clinical Psychology, University College London, UK
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Psychological mediators of the association between childhood adversities and psychosis: A systematic review. Clin Psychol Rev 2018; 65:175-196. [DOI: 10.1016/j.cpr.2018.05.009] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 05/27/2018] [Accepted: 05/31/2018] [Indexed: 01/03/2023]
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45
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Bortolon C, Raffard S. Dissociation Mediates the Relationship Between Childhood Trauma and Experiences of Seeing Visions in a French Sample. J Nerv Ment Dis 2018; 206:850-858. [PMID: 30371639 DOI: 10.1097/nmd.0000000000000885] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Recent research has supported the mediating role of dissociation in the relationship between childhood trauma (CT) and voice hearing in clinical and nonclinical populations. However, this mediating role has not yet been explored with regard to seeing visions (visual hallucinations). This study aimed to explore the mediating effect of dissociation on the relationship between CT and seeing visions. In total, 425 voluntary participants recruited from the general population completed an online survey evaluating CT, dissociative experiences, and the experience of hearing voices and seeing things. The findings showed that defensive dissociation mediated the association between CT and the experience of seeing visions. A similar model in terms of pathways and the model's predictive accuracy was found for hearing voices. Therefore, seeing visions may partly reflect dissociated traumatic events intruding into consciousness. Trauma-based interventions for seeing visions may be beneficial in improving distress associated with these experiences.
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46
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Schiavone FL, McKinnon MC, Lanius RA. Psychotic-Like Symptoms and the Temporal Lobe in Trauma-Related Disorders: Diagnosis, Treatment, and Assessment of Potential Malingering. CHRONIC STRESS 2018; 2:2470547018797046. [PMID: 32440584 PMCID: PMC7219949 DOI: 10.1177/2470547018797046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 07/30/2018] [Indexed: 11/17/2022]
Abstract
Objective To overview the phenomenology, etiology, assessment, and treatment of psychotic-like symptoms in trauma-related disorders focusing on the proposed role of temporal lobe dysfunction. Method We describe the literature pertaining to (i) psychotic-like symptoms and temporal lobe dysfunction in trauma-related disorders and (ii) psychological testing profiles in trauma-related disorders. We define trauma-related disorders as borderline personality disorder, post-traumatic stress disorder, and the dissociative disorders. Our search terms were dissociative disorders, temporal lobe, trauma, post-traumatic stress disorder, borderline personality disorder, psychosis, and malingering. Results Trauma-related psychotic-like symptoms are common and can differ in phenomenology from primary psychotic symptoms. Hallucinations consist of auditory and nonauditory content that may or may not relate to traumatic content. Child voices are highly suggestive of complex dissociative disorders. Critically, not only do these symptoms resemble those seen in temporal lobe epilepsy, but the temporal lobe is implicated in trauma-related disorders, thus providing a plausible neurobiological explanation. Despite such evidence, these symptoms are frequently considered atypical and misdiagnosed. Indeed, common structured psychological assessment tools categorize these symptoms as possible indicators of invalid testing profiles. Conclusion Psychotic-like symptoms are common in trauma-related disorders, may be related to temporal lobe dysfunction, and are frequently misinterpreted. This may lead to ineffective treatment and inappropriate determinations of malingering in the forensic system.
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Affiliation(s)
| | - Margaret C McKinnon
- Mood Disorders Program, St. Joseph's Healthcare, Hamilton, Ontario, Canada.,Department of Psychiatry and Behavioural Neuroscience, McMaster University, Hamilton, Ontario, Canada.,Homewood Research Institute, Guelph, Ontario, Canada
| | - Ruth A Lanius
- Department of Psychiatry, University of Western Ontario, London, Ontario, Canada.,Department of Neuroscience, University of Western Ontario, London, Ontario, Canada
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47
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Bailey T, Alvarez-Jimenez M, Garcia-Sanchez AM, Hulbert C, Barlow E, Bendall S. Childhood Trauma Is Associated With Severity of Hallucinations and Delusions in Psychotic Disorders: A Systematic Review and Meta-Analysis. Schizophr Bull 2018; 44:1111-1122. [PMID: 29301025 PMCID: PMC6101549 DOI: 10.1093/schbul/sbx161] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Introduction Childhood trauma is a risk factor for the development of psychosis. Furthermore, a number of theories propose specific mechanisms by which childhood trauma may contribute to more severe positive and negative psychotic symptoms, some of which are supported empirically. The robustness of this empirical evidence is unclear due to mixed results and methodological limitations of individual studies. A systematic review and meta-analysis of the evidence for associations between childhood trauma and severity of hallucinations, delusions, and negative psychotic symptoms in clinical populations with a diagnosed psychotic disorder is needed. Method A systematic search was conducted. Reference lists of relevant review articles were hand-searched, and authors contacted for data and additional unpublished studies. Study reporting bias and quality was assessed. Results In total, 6667 studies were identified and of these 41 studies met inclusion criteria. Of these, 29 studies (4680 participants) were meta-analyzed. Among individuals with psychosis, childhood trauma was significantly correlated with severity of hallucinations (r = .199, P < .001) and delusions (r = .172, P < .001) but contrary to our hypothesis, not correlated with severity of negative symptoms (r = .049, P = .095). Severity of childhood neglect was correlated with negative symptoms (r = .142, P = .005). Conclusion The results lend support for cognitive and biological theories that traumas in childhood may lead to hallucinations and delusions within psychotic disorders and have important implications for clinical practice.
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Affiliation(s)
- Thomas Bailey
- Psychological Sciences, University of Melbourne, Parkville, Australia
| | - Mario Alvarez-Jimenez
- Orygen, The National Centre of Excellence in Youth Mental Health, Parkville, Australia
- Centre for Youth Mental Health, The University of Melbourne, Parkville, Australia
| | - Ana M Garcia-Sanchez
- Hospital Universitario de Gran Canaria Dr Negrin, Servicio Canario de Salud, Las Palmas de Gran Canaria, Spain
| | - Carol Hulbert
- Psychological Sciences, University of Melbourne, Parkville, Australia
| | - Emma Barlow
- Clinical Services, Port Phillip Prison, Truganina, Australia
| | - Sarah Bendall
- Orygen, The National Centre of Excellence in Youth Mental Health, Parkville, Australia
- Centre for Youth Mental Health, The University of Melbourne, Parkville, Australia
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Sun P, Alvarez-Jimenez M, Simpson K, Lawrence K, Peach N, Bendall S. Does dissociation mediate the relationship between childhood trauma and hallucinations, delusions in first episode psychosis? Compr Psychiatry 2018; 84:68-74. [PMID: 29694935 DOI: 10.1016/j.comppsych.2018.04.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 04/06/2018] [Accepted: 04/09/2018] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Childhood trauma has been linked to the presence of delusions and hallucinations in psychosis, although the mechanisms underlying this relationship require elucidation. Dissociation, characterized by disruptions to the integrative functioning of several core mental domains, has emerged as a potential mechanism. There is a paucity of research using a clinician-rated measure of dissociation to test the indirect effect of dissociation on the relationship between childhood trauma and psychotic symptoms. This study aimed to investigate whether dissociation mediated both the relationships between childhood trauma and hallucinations, and childhood trauma and delusions utilizing a clinician-administered measure of dissociation, namely the Structured Clinical Interview for DSM-IV Dissociative Disorders - Revised (SCID-D-R). METHOD Sixty-six first-episode psychosis (FEP) participants completed a research interview and questionnaires. Information about experiences of childhood trauma, psychosis, dissociation, general psychopathology and demographics were collected. RESULTS When using the SCID-D-R, childhood trauma positively correlated with dissociation. Further, dissociation mediated the relationship between childhood trauma and delusions. Contrary to previous findings, we found no relationship between dissociation and hallucinations and no mediating effect of dissociation on the association between childhood trauma and hallucinations. The results of the SCID-D-R differed significantly from those of the Dissociative Experiences Scale-II (DES-II) which were consistent with previous research. CONCLUSIONS Our findings are the first to use a clinician-rated measure to test the mediating effect of dissociation on the relationship between childhood trauma and positive symptoms (i.e., hallucinations and delusions). Given the discrepancies in results between the SCID-D-R and DES-II, how dissociation is measured in future research is an important consideration. The results add to a body of work that increasingly recognizes the importance of dissociative symptoms on the relationship between childhood trauma and psychosis. The results suggest that dissociative symptoms should be part of routine assessment in those with a history of trauma and present to FEP services.
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Affiliation(s)
- Pamela Sun
- School of Psychological Sciences, Monash University, Wellington Road, Clayton 3800, Victoria, Australia
| | - Mario Alvarez-Jimenez
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville 3052, Victoria, Australia; The Centre for Youth Mental Health, The University of Melbourne, 35 Poplar Road, Parkville 3052, Victoria, Australia
| | - Katrina Simpson
- School of Psychological Sciences, Monash University, Wellington Road, Clayton 3800, Victoria, Australia
| | - Katherine Lawrence
- School of Psychological Sciences, Monash University, Wellington Road, Clayton 3800, Victoria, Australia
| | - Natalie Peach
- School of Psychological Sciences, The University of Melbourne, Grattan Street, Parkville 3010, Victoria, Australia
| | - Sarah Bendall
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville 3052, Victoria, Australia; The Centre for Youth Mental Health, The University of Melbourne, 35 Poplar Road, Parkville 3052, Victoria, Australia.
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Abstract
This article describes the conclusions of an investigation done with 120 Spanish patients: the finding of a new psychopathological profile within a subgroup of patients suffering from schizophrenia. The patients were evaluated through different questionnaires about sociodemographic data, traumatic events, the severity index (both clinical and psychopathological), self-esteem and consciousness of the illness. From the scores obtained on a scale of dissociative experiences, they were classified into two groups: high dissociative symptomatology or HD, and low dissociative symptomatology or LD. The HD group contained 44 patients (36.7% of the total population). The groups LD and HD show meaningful differences with respect to dissociative symptomatology levels, general psychopathology and level of traumatic events suffered. The percentage of patients with low self-esteem was higher in group HD than in group LD (M=25.52 front 28.76 of group LD; t (118)=2.94, p=.00). In addition, the group HD was more conscious of having a mental disorder, of the beneficial effects of medication and of the social consequences of their illness: F (1)=10.929, p=.001; ƞ2pt=0.083; 1-β=0.907. The results show the existence of a subgroup of schizophrenic patients with higher levels of dissociation and trauma that were related with higher levels of symptomatology, lower self-esteem and higher consciousness of the illness, building a population of higher severity in which it would make sense to implement coadjutant treatments specifically oriented to these variables and, in addition, opening a therapeutic possibility for the patients with refractory schizophrenia.
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Bellido-Zanin G, Perona-Garcelán S, Senín-Calderón C, López-Jiménez AM, Ruiz-Veguilla M, Rodríguez-Testal JF. Childhood memories of threatening experiences and submissiveness and its relationship to hallucination proneness and ideas of reference: The mediating role of dissociation. Scand J Psychol 2018; 59:407-413. [PMID: 29808908 DOI: 10.1111/sjop.12455] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 03/28/2018] [Indexed: 11/30/2022]
Abstract
Recent studies have emphasized the importance of childhood memories of threatening experiences and submissiveness in a diversity of psychological disorders. The purpose of this work was to study their specific relationship with hallucination proneness and ideas of reference in healthy subjects. The ELES scale for measuring memory of adverse childhood experiences, the DES-II scale for measuring dissociation, the LSHS-R scale for measuring hallucination proneness, and the REF for ideas of reference were applied to a sample of 472 subjects. A positive association was found between childhood memories of adverse experiences and hallucination proneness and ideas of reference, on one hand, and dissociation on the other. A mediation analysis showed that dissociation was a mediator between the memory of adverse childhood experiences and hallucination proneness on one hand, and ideas of reference on the other. When the role of mediator of the types of dissociative experiences was studied, it was found that absorption and depersonalization mediated between adverse experiences and hallucination proneness. However, this mediating effect was not found between adverse experiences and ideas of reference. The relationship between these last two variables was direct. The results suggest that childhood memories of adverse experiences are a relevant factor in understanding hallucination proneness and ideas of reference. Similarly, dissociation is a specific mediator between adverse childhood experiences and hallucination proneness.
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Affiliation(s)
| | - Salvador Perona-Garcelán
- University Hospital Virgen del Rocío, Spain.,University of Seville Personality, Evaluation and Psychological Treatment Department, Spain
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