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Garner S, Barkus E, Kraeuter AK. Positive and negative schizotypy personality traits are lower in individuals on ketogenic diet in a non-clinical sample. Schizophr Res 2024; 270:423-432. [PMID: 38991418 DOI: 10.1016/j.schres.2024.07.010] [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: 01/11/2024] [Revised: 05/07/2024] [Accepted: 07/03/2024] [Indexed: 07/13/2024]
Abstract
Schizotypal personality comprises traits such as odd beliefs, perceptual abnormalities, and social difficulties; these traits are distributed throughout the general population. While not meeting the clinical threshold for schizophrenia or schizotypal personality disorder, schizotypal personality traits still provide insights for understanding early clinical risk factors. Ketogenic diet reportedly reduces psychotic symptoms in preclinical and clinical studies. Therefore, we investigated whether ketogenic diet is associated with lower schizotypal traits in the general population. Participants following a ketogenic or other diet were recruited using opportunity sampling. Individuals completed a survey investigating general demographic, socioeconomic, health, diet and lifestyle questions, followed by the Schizotypal Personality Questionnaire - Brief Revised version (SPQ-BR). We found that individuals following a ketogenic diet (n = 118) had lower ideas of reference, magical thinking, suspiciousness, unusual perceptions, constricted affect, social anxiety scores, cognitive (positive) perceptual scores, interpersonal (negative) scores and total SPQ-BR compared to individuals on the other diets (n = 139). Magical thinking, constricted affect, social anxiety, cognitive perceptual, interpersonal scores and total SPQ-BR scores remained significant when we controlled for body mass index (BMI) and age. Disorganised features were not influenced by ketogenic diet. The longer individuals adhered to a ketogenic diet the lower their positive and negative schizotypy traits. These findings highlight that ketogenic diet is associated with lower non-clinical schizotypal personality traits. Our results suggest that ketogenic diet might have potential prophylactic properties for individuals at-risk for psychosis.
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Affiliation(s)
- Sarah Garner
- Faculty of Health and Life Sciences, Psychology, Northumbria University, Newcastle upon Tyne, UK
| | - Emma Barkus
- Faculty of Health and Life Sciences, Psychology, Northumbria University, Newcastle upon Tyne, UK
| | - Ann-Katrin Kraeuter
- Faculty of Health and Life Sciences, Psychology, Northumbria University, Newcastle upon Tyne, UK; Brain, Performance and Nutrition Research Centre, Northumbria University, Newcastle upon Tyne, UK; NUTRAN, Northumbria University, Newcastle upon Tyne, UK.
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Kemp KC, Sperry SH, Hernández L, Barrantes-Vidal N, Kwapil TR. Association of Positive, Negative, and Disorganized Schizotypy With the Temporal Dynamics of Schizotypic Experiences in Daily Life. Schizophr Bull 2024:sbae112. [PMID: 38962937 DOI: 10.1093/schbul/sbae112] [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: 07/05/2024]
Abstract
BACKGROUND AND HYPOTHESIS Schizotypy is a useful and unifying construct for examining the etiology, development, and expression of schizophrenia-spectrum psychopathology. The positive, negative, and disorganized schizotypy dimensions are associated with distinct patterns of schizophrenia-spectrum symptoms and impairment. Furthermore, they are differentiated by mean levels of psychotic-like, suspicious, negative, and disorganized schizotypic experiences in daily life, and by temporal dynamics of affect. The schizotypy dimensions were thus hypothesized to be differentiated by the temporal dynamics of schizotypic experiences in daily life. STUDY DESIGN The present study employed experience sampling methodology in a large nonclinically ascertained sample (n = 693) to examine the associations of multidimensional schizotypy with psychotic-like, suspicious, negative, and disorganized schizotypic experiences in daily life, as well as with their temporal dynamics (variability, reactivity, inertia, and instability). STUDY RESULTS We replicated the mean-level associations between multidimensional schizotypy and schizotypic experiences in daily life. Furthermore, positive, negative, and disorganized schizotypy demonstrated hypothesized, differential patterns of temporal dynamics of schizotypic experiences. Disorganized schizotypy demonstrated the most robust associations, including intensity, variability, and inertia of disorganized schizotypic experiences. Disorganized schizotypy also moderated reactivity of psychotic-like and disorganized schizotypic experiences following previously reported stress. Positive schizotypy was associated with intensity and variability of psychotic-like experiences. Negative schizotypy was associated with intensity and variability of negative schizotypic experiences. CONCLUSIONS The findings indicate that schizotypy dimensions can be differentiated by both mean levels and temporal patterns of psychotic-like, suspicious, negative, and disorganized schizotypic experiences in daily life, with disorganized schizotypy uniquely characterized by stress reactivity.
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Affiliation(s)
- Kathryn C Kemp
- University of Illinois at Urbana-Champaign, Department of Psychology, Champaign, IL, USA
- The Ohio State University Wexner Medical Center, Department of Psychiatry and Behavioral Health, Columbus, OH, USA
| | - Sarah H Sperry
- University of Michigan, Department of Psychiatry, Ann Arbor, MI, USA
| | - Laura Hernández
- University of Illinois at Urbana-Champaign, Department of Psychology, Champaign, IL, USA
| | - Neus Barrantes-Vidal
- Universitat Autònoma de Barcelona, Departament de Psicologia Clinica i de la Salut, Barcelona, Spain
| | - Thomas R Kwapil
- University of Illinois at Urbana-Champaign, Department of Psychology, Champaign, IL, USA
- University of North Carolina at Greensboro, Department of Psychology, Greensboro, NC, USA
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DeBats CC, Abel DB, Sullivan MM, Koesterer SC, Linton IS, Mickens JL, Russell MT, Hammer LA, Minor KS. Social Activity in Schizotypy: Measuring Frequency and Enjoyment of Social Events. Behav Sci (Basel) 2024; 14:474. [PMID: 38920806 PMCID: PMC11201023 DOI: 10.3390/bs14060474] [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: 05/07/2024] [Accepted: 06/03/2024] [Indexed: 06/27/2024] Open
Abstract
Improving social functioning deficits-a core characteristic of schizophrenia-spectrum disorders-is often listed by patients as a key recovery goal. Evidence suggests that social deficits also extend to people with schizotypy, a group at heightened risk for psychotic and other psychopathological disorders. One challenge of social functioning research in schizotypy is understanding whether social deficits arise from receiving less pleasure from social activities or from participating less in high-pleasure activities. However, limited information exists on what constitutes highly pleasurable, common social activities. In this study, 357 college students rated the frequency and enjoyment of 38 social activities. Our aims were to categorize activities based on their frequency and enjoyment, and whether these correlated with validated social functioning and schizotypy measures. We found that social activities could be characterized based on their frequency and enjoyment and created a frequency-enjoyment matrix that could be useful for future studies. Activities were correlated with social functioning, generally reaching a small effect size level, with increasing frequency and enjoyment showing associations with greater social functioning. Further, negative and disorganized-but not positive-traits were associated with less engagement and pleasure. Although follow-up studies in community samples are needed, our findings have the potential to help researchers and clinicians better understand which activities participants are more likely to engage in and derive pleasure from. The findings may also illustrate the extent to which social deficits may be due to less engagement or less pleasure from social activities, as well as which aspects of schizophrenia-spectrum disorders are associated with these facets of social functioning.
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Affiliation(s)
- Candice C. DeBats
- Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA; (C.C.D.); (D.B.A.); (M.M.S.); (S.C.K.); (I.S.L.); (J.L.M.); (M.T.R.)
| | - Danielle B. Abel
- Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA; (C.C.D.); (D.B.A.); (M.M.S.); (S.C.K.); (I.S.L.); (J.L.M.); (M.T.R.)
- West Haven VA Medical Center, West Haven, CT 06516, USA
| | - Morgan M. Sullivan
- Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA; (C.C.D.); (D.B.A.); (M.M.S.); (S.C.K.); (I.S.L.); (J.L.M.); (M.T.R.)
- Department of Psychology, University of Indianapolis, Indianapolis, IN 46227, USA
| | - Sophia C. Koesterer
- Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA; (C.C.D.); (D.B.A.); (M.M.S.); (S.C.K.); (I.S.L.); (J.L.M.); (M.T.R.)
- Department of Psychology, University of Iowa, Iowa City, IA 52242, USA
| | - Imani S. Linton
- Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA; (C.C.D.); (D.B.A.); (M.M.S.); (S.C.K.); (I.S.L.); (J.L.M.); (M.T.R.)
| | - Jessica L. Mickens
- Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA; (C.C.D.); (D.B.A.); (M.M.S.); (S.C.K.); (I.S.L.); (J.L.M.); (M.T.R.)
| | - Madisen T. Russell
- Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA; (C.C.D.); (D.B.A.); (M.M.S.); (S.C.K.); (I.S.L.); (J.L.M.); (M.T.R.)
| | - Lillian A. Hammer
- Department of Psychology, University of Southern Mississippi, Hattiesburg, MS 39406, USA;
| | - Kyle S. Minor
- Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA; (C.C.D.); (D.B.A.); (M.M.S.); (S.C.K.); (I.S.L.); (J.L.M.); (M.T.R.)
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Yan YJ, Hu HX, Zhang YJ, Wang LL, Pan YM, Lui SSY, Huang J, Chan RCK. Reward motivation adaptation in people with negative schizotypal features: development of a novel behavioural paradigm and identifying its neural correlates using resting-state functional connectivity analysis. Eur Arch Psychiatry Clin Neurosci 2024; 274:941-953. [PMID: 37395812 DOI: 10.1007/s00406-023-01640-8] [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] [Received: 11/25/2022] [Accepted: 06/13/2023] [Indexed: 07/04/2023]
Abstract
Reward motivation in individuals with high levels of negative schizotypal traits (NS) has been found to be lower than that in their counterparts. But it is unclear that whether their reward motivation adaptively changes with external effort-reward ratio, and what resting-state functional connectivity (rsFC) is associated with this change. Thirty-five individuals with high levels of NS and 44 individuals with low levels of NS were recruited. A 3T resting-state functional brain scan and a novel reward motivation adaptation behavioural task were administrated in all participants. The behavioural task was manipulated with three conditions (effort > reward condition vs. effort < reward condition vs. effort = reward condition). Under each condition were rated 'wanting' and 'liking' for rewards. The seed-based voxel-wise rsFC analysis was conducted to explore the rsFCs associated with the 'wanting' and 'liking' ratings in individuals with high levels of NS. 'Wanting' and 'liking' ratings of individuals with high levels of NS significantly declined in the effort > reward condition but did not rebound as high as their counterparts in the effort < reward condition. The rsFCs in NS group associated with these ratings were altered. The altered rsFCs in NS group involved regions in the prefrontal lobe, dopaminergic brain regions (ventral tegmental area, substantia nigra), hippocampus, thalamus and cerebellum. Individuals with high levels of NS manifested their reward motivation adaptation impairment as a failure of adjustment adaptively during effort-reward imbalance condition and altered rsFCs in prefrontal, dopaminergic and other brain regions.
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Affiliation(s)
- Yong-Jie Yan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, People's Republic of China
- Sino-Danish College of University of Chinese Academy of Sciences, Beijing, People's Republic of China
- Sino-Danish Centre for Education and Research, Beijing, People's Republic of China
| | - Hui-Xin Hu
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, People's Republic of China
- Department of Psychology, The University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Yi-Jing Zhang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, People's Republic of China
- Department of Psychology, The University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Ling-Ling Wang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, People's Republic of China
- Department of Psychology, The University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Yi-Ming Pan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, People's Republic of China
- Department of Psychology, The University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Simon S Y Lui
- Department of Psychiatry, School of Clinical Medicine, The University of Hong Kong, Hong Kong Special Administrative Region , People's Republic of China
| | - Jia Huang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, People's Republic of China.
- Department of Psychology, The University of Chinese Academy of Sciences, Beijing, People's Republic of China.
| | - Raymond C K Chan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, People's Republic of China.
- Sino-Danish College of University of Chinese Academy of Sciences, Beijing, People's Republic of China.
- Department of Psychology, The University of Chinese Academy of Sciences, Beijing, People's Republic of China.
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Torrens WA, Pablo JN, Berryhill ME, Haigh SM. Pattern glare sensitivity distinguishes subclinical autism and schizotypy. Cogn Neuropsychiatry 2024; 29:155-172. [PMID: 38551240 PMCID: PMC11296901 DOI: 10.1080/13546805.2024.2335103] [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] [Received: 04/11/2023] [Accepted: 03/20/2024] [Indexed: 06/27/2024]
Abstract
INTRODUCTION Schizophrenia and autism spectrum disorder are distinct neurodevelopmental disorders sharing clinically relevant behaviours. However, early sensory responses show divergent responses. Individuals with schizophrenia typically exhibit cortical hypo-excitability whereas individuals with autism show cortical hyperexcitability. Identifying reliable neurobiological differences between the disorders can diminish misdiagnosis and optimise treatments. METHODS The pattern glare test (PGT) is a simple measure of behavioural hyperexcitability. It measures the number of illusions seen in a static horizontal grating. We collected PGT data from non-clinical adults varying in traits of autism and schizophrenia (schizotypy). 576 undergraduate students completed an online survey consisting of the Schizotypal Personality Questionnaire - Brief Revised, the Autism Spectrum Quotient, and the PGT. RESULTS Subclinical autism and schizotypy traits were highly positively correlated. However, only schizotypy scores were significantly predictive of reporting more pattern glare (PG) illusions. When assessing the subcomponents of the schizotypy and autism scores, positive and disorganised schizotypy traits were predictive of reporting more PG illusions. Whereas, subclinical autism factors were not predictive of PG illusions. CONCLUSIONS High schizotypy performed the PGT in a manner consistent with behavioural hyperexcitability. The PGT distinguished subclinical autistic traits from schizotypy, suggesting potential clinical application.
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Affiliation(s)
- Wendy A Torrens
- Department of Psychology and Institute for Neuroscience, University of Nevada, Reno, USA
| | - Jenna N Pablo
- Department of Psychology and Institute for Neuroscience, University of Nevada, Reno, USA
| | - Marian E Berryhill
- Department of Psychology and Institute for Neuroscience, University of Nevada, Reno, USA
| | - Sarah M Haigh
- Department of Psychology and Institute for Neuroscience, University of Nevada, Reno, USA
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Chirica MG, Zhu Y, Mu W, Zhou H, Gong J, Chan RCK, Kwapil TR, Berenbaum H. Exploring phenotypic overlap across schizotypy and autism spectrum conditions in American and Chinese young adults. Schizophr Res 2024; 267:359-366. [PMID: 38626663 DOI: 10.1016/j.schres.2024.03.050] [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: 03/30/2023] [Revised: 03/25/2024] [Accepted: 03/31/2024] [Indexed: 04/18/2024]
Abstract
Competing theories have been proposed to explain the considerable overlap in social-cognitive features and risk factors across schizotypy and autism spectrum conditions (ASCs). Six previous factor analyses have been reported in the literature, yet all have major limitations; evidence for the clear superiority of any of the competing theories is insufficient and warrants further investigation. The primary aim of the present research was to identify dimensions that cut across schizotypy and ASCs while addressing limitations of past research. Data were collected from three independent samples (n = 1006, 544, and 2469) in the U.S. and China using the Autism-Spectrum Quotient, the Schizotypal Personality Questionnaire, and the Wisconsin Schizotypy Scales. Exploratory factor analyses in Sample 1 identified an interpretable three-factor structure, which was replicated in Samples 2 and 3 using confirmatory factor analyses. We found consistent evidence for three dimensions (Aberrant Salience, Asociality, and Concrete Thinking) underlying schizotypy and ASCs. This three-dimension model is consistent with a common vulnerability model of schizotypy and ASCs. Implications of these findings for the schizotypy and ASCs literature are discussed.
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Affiliation(s)
- Marianne G Chirica
- Department of Psychological and Brain Sciences, Indiana University Bloomington, Bloomington, IN, United States of America
| | - Yiqin Zhu
- Department of Psychological and Brain Sciences, Washington University in St Louis, St Louis, MO, United States of America
| | - Wenting Mu
- Department of Psychology, Tsinghua University, Beijing, China.
| | - Hanyu Zhou
- School of Psychology and Cognitive Science, East China Normal University, Shanghai, China
| | - Jingbo Gong
- Shanghai Changning Mental Health Center, Shanghai, China
| | - Raymond C K Chan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Thomas R Kwapil
- Department of Psychology, University of Illinois at Urbana Champaign, Champaign, IL, United States of America
| | - Howard Berenbaum
- Department of Psychology, University of Illinois at Urbana Champaign, Champaign, IL, United States of America
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Monette MA, Russell MT, Abel DB, Lewis JT, Mickens JL, Myers EJ, Hricovec MM, Cicero DC, Wolny J, Hetrick WP, Masucci MD, Cohen AS, Burgin CJ, Kwapil TR, Minor KS. Differential Risk: Gender and Racial Differences in the Relationship between Trauma, Discrimination, and Schizotypy. Behav Sci (Basel) 2024; 14:363. [PMID: 38785854 PMCID: PMC11117737 DOI: 10.3390/bs14050363] [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: 01/29/2024] [Revised: 04/15/2024] [Accepted: 04/23/2024] [Indexed: 05/25/2024] Open
Abstract
Traumatic experiences are associated with increased experiences of positive schizotypy. This may be especially important for People of Color, who experience higher rates of trauma and racial discrimination. No study to date has examined how racial disparities in traumatic experiences may impact schizotypy. Furthermore, of the studies that have examined the relationship between trauma and schizotypy, none have examined racial discrimination as a potential moderator. The present study examined if racial discrimination moderates the relationship between trauma and multidimensional (positive, negative, and disorganized) schizotypy. In a sample of 770 college students, we conducted chi-squared analyses, analyses of variance, and stepwise regressions. We found that Black students experienced significantly higher racial discrimination and trauma than Latinx and Asian students. Furthermore, Black and Latinx students experienced significantly more multidimensional schizotypy items than Asian students. Trauma and racial discrimination explained 8 to 23% of the variance in each dimension of schizotypy. Racial discrimination did not moderate the relationships between trauma and multidimensional schizotypy. Our findings suggest that we need to examine risk factors that may prevent recovery from psychotic disorders. Additionally, disorganized schizotypy showed the most robust associations and may be a critical site of intervention.
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Affiliation(s)
- Mahogany A. Monette
- Department of Psychology, Indiana University Indianapolis, Indianapolis, IN 46202, USA; (M.T.R.); (J.L.M.); (E.J.M.); (K.S.M.)
| | - Madisen T. Russell
- Department of Psychology, Indiana University Indianapolis, Indianapolis, IN 46202, USA; (M.T.R.); (J.L.M.); (E.J.M.); (K.S.M.)
| | - Danielle B. Abel
- Department of Psychology, Indiana University Indianapolis, Indianapolis, IN 46202, USA; (M.T.R.); (J.L.M.); (E.J.M.); (K.S.M.)
| | - Jarrett T. Lewis
- Department of Educational Psychology, University of Illinois Urbana-Champaign, Champaign, IL 61820, USA;
| | - Jessica L. Mickens
- Department of Psychology, Indiana University Indianapolis, Indianapolis, IN 46202, USA; (M.T.R.); (J.L.M.); (E.J.M.); (K.S.M.)
| | - Evan J. Myers
- Department of Psychology, Indiana University Indianapolis, Indianapolis, IN 46202, USA; (M.T.R.); (J.L.M.); (E.J.M.); (K.S.M.)
| | - Megan M. Hricovec
- Department of Psychology, University of North Texas, Denton, TX 76201, USA (D.C.C.)
| | - David C. Cicero
- Department of Psychology, University of North Texas, Denton, TX 76201, USA (D.C.C.)
| | - J. Wolny
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA; (J.W.)
| | - William P. Hetrick
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA; (J.W.)
| | - Michael D. Masucci
- Department of Psychology, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Alex S. Cohen
- Department of Psychology, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Christopher J. Burgin
- Department of Psychology, Tennessee Technological University, Cookeville, TN 38505, USA;
| | - Thomas R. Kwapil
- Department of Psychology, University of Illinois Urbana-Champaign, Champaign, IL 61820, USA;
- Department of Psychology, University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Kyle S. Minor
- Department of Psychology, Indiana University Indianapolis, Indianapolis, IN 46202, USA; (M.T.R.); (J.L.M.); (E.J.M.); (K.S.M.)
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Karamaouna P, Zouraraki C, Economou E, Kafetsios K, Bitsios P, Giakoumaki SG. Cold executive function processes and their hot analogs in schizotypy. J Int Neuropsychol Soc 2024; 30:285-294. [PMID: 37750805 DOI: 10.1017/s1355617723000590] [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] [Indexed: 09/27/2023]
Abstract
OBJECTIVE To examine cold (based on logical reasoning) versus hot (having emotional components) executive function processes in groups with high individual schizotypal traits. METHOD Two-hundred and forty-seven participants were administered the Schizotypal Personality Questionnaire and were allocated into schizotypal (cognitive-perceptual, paranoid, negative, disorganized) or control groups according to pre-specified criteria. Participants were also administered a battery of tasks examining working memory, complex selective attention, response inhibition, decision-making and fluid intelligence and their affective counterparts. The outcome measures of each task were reduced to one composite variable thus formulating five cold and five hot cognitive domains. Between-group differences in the cognitive domains were examined with repeated measures analyses of covariance. RESULTS For working memory, the control and the cognitive-perceptual groups outperformed negative schizotypes, while for affective working memory controls outperformed the disorganized group. Controls also scored higher compared with the disorganized group in complex selective attention, while both the control and the cognitive-perceptual groups outperformed negative schizotypes in complex affective selective attention. Negative schizotypes also had striking difficulties in response inhibition, as they scored lower compared with all other groups. Despite the lack of differences in fluid intelligence, controls scored higher compared with all schizotypal groups (except from cognitive-perceptual schizotypes) in emotional intelligence; the latter group reported higher emotional intelligence compared with negative schizotypes. CONCLUSION Results indicate that there is no categorical association between the different schizotypal dimensions with solely cold or hot executive function processes and support impoverished emotional intelligence as a core feature of schizotypy.
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Affiliation(s)
- Penny Karamaouna
- Laboratory of Neuropsychology, Department of Psychology, School of Social Sciences, University of Crete, Rethymno, Crete, Greece
- University of Crete Research Center for the Humanities, the Social and Education Sciences (UCRC), University of Crete, Rethymno, Crete, Greece
| | - Chrysoula Zouraraki
- Laboratory of Neuropsychology, Department of Psychology, School of Social Sciences, University of Crete, Rethymno, Crete, Greece
- University of Crete Research Center for the Humanities, the Social and Education Sciences (UCRC), University of Crete, Rethymno, Crete, Greece
| | - Elias Economou
- Laboratory of Experimental Psychology, Department of Psychology, School of Social Sciences, University of Crete, Rethymno, Crete, Greece
| | | | - Panos Bitsios
- Department of Psychiatry and Behavioural Sciences, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Stella G Giakoumaki
- Laboratory of Neuropsychology, Department of Psychology, School of Social Sciences, University of Crete, Rethymno, Crete, Greece
- University of Crete Research Center for the Humanities, the Social and Education Sciences (UCRC), University of Crete, Rethymno, Crete, Greece
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Lányi O, Kéri S, Pálffy Z, Polner B. Can you believe your eyes? Positive schizotypy is associated with increased susceptibility to the Müller-Lyer illusion. Schizophr Res 2024; 264:327-335. [PMID: 38215568 DOI: 10.1016/j.schres.2023.12.023] [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: 11/04/2022] [Revised: 11/27/2023] [Accepted: 12/17/2023] [Indexed: 01/14/2024]
Abstract
BACKGROUND AND HYPOTHESIS Visual illusions provide a unique opportunity to understand cognitive and perceptual alterations in schizophrenia-spectrum conditions. Schizophrenia patients often exhibit increased susceptibility to the Müller-Lyer illusion. Here, we investigate susceptibility to the Müller-Lyer visual illusion in the general population with different levels of schizotypy. STUDY DESIGN We assessed a population-based convenience sample (N = 263) on an online platform. In addition to basic demographics, participants completed the Müller-Lyer illusion, the Cardiff Anomalous Perceptions Scale (CAPS) to measure perceptual anomalies, and the Multidimensional Schizotypy Scale - Brief (MSS-B) for schizotypic traits. To evaluate what predicts susceptibility to the illusion, we fitted a large set of multilevel logistic regression models and performed model averaging over the coefficients. STUDY RESULTS We found support for increased illusion susceptibility among individuals with high positive schizotypy. However, we did not find a comparable effect for anomalous perceptions alone, or for negative or disorganized schizotypy. CONCLUSIONS The increased Müller-Lyer effect in positive schizotypy might be specific to delusion-like beliefs and magical ideation. Further research is needed to clarify how a hierarchical Bayesian formulation of brain function (e.g. imbalances between bottom-up perceptual processing and substantial reliance on prior expectations) can account for the Müller-Lyer effect in schizophrenia-spectrum conditions.
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Affiliation(s)
- Orsolya Lányi
- Department of Psychiatry and Psychotherapy, Semmelweis University, Balassa utca 6, Budapest 1082, Hungary
| | - Szabolcs Kéri
- Department of Cognitive Science, Budapest University of Technology and Economics, Egry József utca 1, Budapest 1111, Hungary; National Institute of Mental Health, Neurology and Neurosurgery - Nyírő Gyula Hospital, Lehel utca 59-61, Budapest 1135, Hungary
| | - Zsófia Pálffy
- Department of Cognitive Science, Budapest University of Technology and Economics, Egry József utca 1, Budapest 1111, Hungary.
| | - Bertalan Polner
- Institute of Psychology, ELTE, Eötvös Loránd University, Izabella utca 46, Budapest 1064, Hungary
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Nonweiler J, Torrecilla P, Kwapil TR, Ballespí S, Barrantes-Vidal N. I don't understand how I feel: mediating role of impaired self-mentalizing in the relationship between childhood adversity and psychosis spectrum experiences. Front Psychiatry 2023; 14:1268247. [PMID: 38098634 PMCID: PMC10719857 DOI: 10.3389/fpsyt.2023.1268247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 11/13/2023] [Indexed: 12/17/2023] Open
Abstract
Introduction Childhood adversity is associated with the severity of multiple dimensions of psychosis, but the mechanisms underpinning the close link between the two constructs is unclear. Mentalization may underlie this relationship, as impaired mentalizing is found in various stages of the psychosis continuum. Nonetheless, the differential roles of self- and other-mentalizing in psychosis are not well understood. Methods Parallel multiple mediation was conducted for the relationship between a diverse range of childhood adversity types, including intentional and nonintentional harm, and schizotypy (positive, negative, disorganized), psychotic-like experiences (PLE) and paranoia via self-mentalizing (attention to emotions and emotional clarity) and other-mentalizing in n = 1,156 nonclinically ascertained young adults. Results Significant parallel multiple mediation models were found for all psychotic outcomes except negative schizotypy. The associations between intentionally harmful childhood adversity and psychotic outcomes were significantly mediated by increased attention to emotions for most models and decreased emotional clarity for some models. No significant mediation was found for parental loss. Paternal abuse was only mediated by attention to emotions whereas the effects of maternal abuse were mediated by attention to emotions and emotional clarity. Other-mentalizing only showed mediating effects on one of thirty models tested. Conclusion Results highlight the mediating role of impaired self-mentalizing in the association between childhood adversity and psychosis. This is consistent with disturbances of self-concept and self-boundary characterizing, in particular, the positive dimension of psychosis. Maternal versus paternal figures may contribute differentially to the development of mentalizing. These results could inform future preventative interventions, focusing on the development and maintenance of self-mentalizing.
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Affiliation(s)
- Jacqueline Nonweiler
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Pilar Torrecilla
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Thomas R. Kwapil
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Sergi Ballespí
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Neus Barrantes-Vidal
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Barcelona, Spain
- CIBER de Salud Mental, Instituto de Salud Carlos III, Madrid, Spain
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11
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Asan AE, Pincus AL. Examining Schizotypal Personality Scales Within and Across Interpersonal Circumplex Surfaces. Assessment 2023; 30:2296-2317. [PMID: 36631938 PMCID: PMC10478344 DOI: 10.1177/10731911221143354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Differing perspectives on the operationalization of schizotypal personality pathology (STPP) have led to numerous multidimensional assessment measures. The current study applied the interpersonal construct validation approach to self-report data from 856 undergraduate students to formally examine the interpersonal content, similarities, and differences in the subscales of four measures of STPP within and across two interpersonal circumplex surfaces using a bootstrapping methodology for computing confidence intervals around circumplex structural summary method parameters. Results suggested that negative-like expressions of STPP are prototypically and distinctively interpersonal constructs associated with cold and socially avoidant interpersonal problems and hypersensitivity to others' warmth and affection. Positive-like expressions of STPP as assessed by two out of four measures were prototypically and distinctively interpersonal constructs associated with vindictiveness. Across four measures, there was notable overlap in interpersonal correlates among related subscales, suggesting convergent validity. However, subscales containing social anxiety content were associated with more submissive (i.e., socially avoidant) interpersonal problems than subscales without social anxiety content.
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Affiliation(s)
- A. Esin Asan
- The Pennsylvania State University, University Park, USA
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12
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Zandbagleh A, Mirzakuchaki S, Daliri MR, Sumich A, Anderson JD, Sanei S. Graph-based analysis of EEG for schizotypy classification applying flicker Ganzfeld stimulation. SCHIZOPHRENIA (HEIDELBERG, GERMANY) 2023; 9:64. [PMID: 37735164 PMCID: PMC10514040 DOI: 10.1038/s41537-023-00395-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 09/11/2023] [Indexed: 09/23/2023]
Abstract
Ganzfeld conditions induce alterations in brain function and pseudo-hallucinatory experiences, particularly in people with high positive schizotypy. The current study uses graph-based parameters to investigate and classify brain networks under Ganzfeld conditions as a function of positive schizotypy. Participants from the general population (14 high schizotypy (HS), 29 low schizotypy (LS)) had an electroencephalography assessment during Ganzfeld conditions, with varying visual activation (8 frequencies of random light flicker) and soundscape-induced mood (neutral, serenity, and anxiety). Weighted functional networks were computed in six frequency sub-bands (delta, theta, alpha-low, alpha-high, beta, and gamma) as a function of light-flicker frequency and mood. The brain network was analyzed using graph theory parameters, including clustering coefficient (CC), strength, and global efficiency (GE). It was found that the LS groups had higher CC and strength than the HS groups, especially in bilateral temporal and frontotemporal brain regions. Moreover, some decreases in CC and strength measures were found in LS groups among occipital and parieto-occipital brain regions. LS groups also had significantly higher GE in all Ganzfeld conditions compared to the HS groups. The random under-sampling boosting (RUSBoost) algorithm achieved the best classification performance with an accuracy of 95.34%, specificity of 96.55%, and sensitivity of 92.85% during an anxiety-induction Ganzfeld condition. This is the first exploration of the relationship between brain functional state changes under Ganzfeld conditions in individuals who vary in positive schizotypy. The accuracy of graph-based parameters in classifying brain states as a function of schizotypy is shown, particularly for brain activity during anxiety induction, and should be investigated in psychosis.
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Affiliation(s)
- Ahmad Zandbagleh
- School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Sattar Mirzakuchaki
- School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran.
| | - Mohammad Reza Daliri
- School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Alexander Sumich
- Division of Psychology, Nottingham Trent University, Main Campus, Nottingham, UK
| | - John D Anderson
- Division of Psychology, Nottingham Trent University, Main Campus, Nottingham, UK
| | - Saeid Sanei
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, UK
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13
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Pfarr JK, Meller T, Evermann U, Sahakyan L, Kwapil TR, Nenadić I. Trait schizotypy and the psychosis prodrome: Current standard assessment of extended psychosis spectrum phenotypes. Schizophr Res 2023; 254:208-217. [PMID: 36933416 DOI: 10.1016/j.schres.2023.03.004] [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: 05/23/2022] [Revised: 01/10/2023] [Accepted: 03/03/2023] [Indexed: 03/20/2023]
Abstract
Schizotypy has become an increasingly important construct for elaborating psychotic disorders that vary along the schizophrenic spectrum. However, different schizotypy inventories vary in conceptual approach and measurement. In addition, commonly used schizotypy scales have been seen as qualitatively different from screening instruments for prodromal schizophrenia like the Prodromal Questionnaire-16 (PQ-16). Our study investigated the psychometric properties of three schizotypy questionnaires (the Schizotypal Personality Questionnaire-Brief, Oxford-Liverpool Inventory of Feelings and Experiences, and the Multidimensional Schizotypy Scale) as well as the PQ-16 in a cohort of 383 non-clinical subjects. We initially evaluated their factor structure using Principal Component Analysis (PCA) and used Confirmatory Factor Analysis (CFA) to test a newly proposed composition of factors. PCA results support a three-factor structure of schizotypy that accounts for 71 % of the total variance, but also shows cross-loadings of some schizotypy subscales. CFA of the newly composed schizotypy factors (together with an added neuroticism factor) shows good fit. Analyses including the PQ-16 indicate considerable overlap with measures of trait schizotypy, suggesting that the PQ-16 might not be quantitatively or qualitatively different from schizotypy measurements. Taken together, results indicate that there is good support for a three-factor structure of schizotypy but also that different schizotypy measurements grasp facets of schizotypy differently. This points towards the need for an integrative approach for assessing the construct of schizotypy.
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Affiliation(s)
- Julia-Katharina Pfarr
- Department of Psychiatry and Psychotherapy, University of Marburg, Germany; Center for Mind, Brain and Behavior, University of Marburg, Germany.
| | - Tina Meller
- Department of Psychiatry and Psychotherapy, University of Marburg, Germany; Center for Mind, Brain and Behavior, University of Marburg, Germany
| | - Ulrika Evermann
- Department of Psychiatry and Psychotherapy, University of Marburg, Germany; Center for Mind, Brain and Behavior, University of Marburg, Germany
| | - Lili Sahakyan
- Department of Psychology, University of Illinois at Urbana-Champaign, United States of America; Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, United States of America
| | - Thomas R Kwapil
- Department of Psychology, University of Illinois at Urbana-Champaign, United States of America; Department of Psychology, University of North Carolina at Greensboro, United States of America
| | - Igor Nenadić
- Department of Psychiatry and Psychotherapy, University of Marburg, Germany; Center for Mind, Brain and Behavior, University of Marburg, Germany
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14
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Monsonet M, Amedy A, Kwapil TR, Barrantes-Vidal N. A psychosocial pathway to paranoia: The interplay between social connectedness and self-esteem. Schizophr Res 2023; 254:199-207. [PMID: 36931182 DOI: 10.1016/j.schres.2023.03.006] [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: 05/26/2022] [Revised: 01/11/2023] [Accepted: 03/03/2023] [Indexed: 03/19/2023]
Abstract
The quantity and quality of social contacts have been related to self-esteem, and both social relationships and self-esteem have been implicated in the pathways to paranoia. However, how social relationships interplay with self-esteem to trigger paranoia is not well understood. This study aims to investigate whether different measures of social connectedness (social support, loneliness, and desired friendship), as well as the frequency of social contact, impact paranoia and other positive and negative psychotic-like experiences (PLE) through the indirect effect of self-esteem. Data from a sample of 169 nonclinically ascertained participants oversampled for schizotypy scores were analyzed using two different approaches: retrospective trait-like and ecological momentary measures of social connectedness. Results showed that self-esteem mediates the pathways from poor social support and social longing, but not from loneliness, to paranoia and other cognitive PLE. In contrast, pathways from social connectedness to perceptual PLE and negative PLE were not mediated by self-esteem. Results were consistent across trait-like and momentary measures. Finally, self-esteem was not implicated in the pathways from the frequency of social contact and paranoia or other forms of PLE. These results provide a comprehensive picture of how social connectedness drives specific symptoms of psychosis through self-esteem. Findings underscore the need to explore separately the quality and quantity of social relationships and suggest that the subjective experience of meaningful social bonds is key social determinants of mental health. Therefore, addressing inadequacies of social connectedness could substantially improve symptomatic and functional outcomes of psychosis.
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Affiliation(s)
- Manel Monsonet
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain; Department of Psychology, University of Illinois at Urbana-Champaign, United States of America
| | - Amad Amedy
- Department of Psychology, Vanderbilt University, United States of America
| | - Thomas R Kwapil
- Department of Psychology, University of Illinois at Urbana-Champaign, United States of America
| | - Neus Barrantes-Vidal
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain; CIBER de Salud Mental, Instituto de Salud Carlos III, Spain.
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15
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Feller C, Ilen L, Eliez S, Schneider M. Characterizing Daily-Life Social Interactions in Adolescents and Young Adults with Neurodevelopmental Disorders: A Comparison Between Individuals with Autism Spectrum Disorders and 22q11.2 Deletion Syndrome. J Autism Dev Disord 2023; 53:245-262. [PMID: 35018586 PMCID: PMC9889413 DOI: 10.1007/s10803-021-05423-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2021] [Indexed: 02/04/2023]
Abstract
Social impairments are common features of 22q11.2 deletion syndrome (22q11DS) and autism spectrum disorders (ASD). The Ecological Momentary Assessment (EMA) allowed access to daily-life information in order to explore the phenomenology of social interactions. 32 individuals with 22q11DS, 26 individuals with ASD and 44 typically developing peers (TD) aged 12-30 were assessed during 6 days 8 times a day using a mobile app. Participants with 22q11DS and ASD did not spend more time alone but showed distinct implication in the social sphere than TD. Distinct profiles emerged between the two conditions regarding the subjective experience of aloneness and the subjective experience of social interactions. This study highlights distinct social functioning profiles in daily-life in 22q11DS and ASD that points towards different therapeutic targets.
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Affiliation(s)
- Clémence Feller
- grid.8591.50000 0001 2322 4988Clinical Psychology Unit for Intellectual and Developmental Disabilities, Faculty of Psychology and Educational Sciences, University of Geneva, 40, Boulevard du Pont-d’Arve, 1205 Geneva, Switzerland
| | - Laura Ilen
- grid.8591.50000 0001 2322 4988Clinical Psychology Unit for Intellectual and Developmental Disabilities, Faculty of Psychology and Educational Sciences, University of Geneva, 40, Boulevard du Pont-d’Arve, 1205 Geneva, Switzerland
| | - Stephan Eliez
- grid.8591.50000 0001 2322 4988Developmental Imaging and Psychopathology Lab Research Unit, Faculty of Medicine, University of Geneva, Geneva, Switzerland ,grid.8591.50000 0001 2322 4988Department of Genetic Medicine and Development, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Maude Schneider
- grid.8591.50000 0001 2322 4988Clinical Psychology Unit for Intellectual and Developmental Disabilities, Faculty of Psychology and Educational Sciences, University of Geneva, 40, Boulevard du Pont-d’Arve, 1205 Geneva, Switzerland ,grid.5596.f0000 0001 0668 7884Department of Neurosciences, Center for Contextual Psychiatry, KU Leuven, Leuven, Belgium
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16
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Chu RST, Tong CCHY, Wong CSM, Chang WC, Tang WCY, Chan CCL, Lui SSY, Hui LM, Suen YN, Chan KW, Lee HM, Chen EYH. Effort-based decision making in schizotypy and its relationship with amotivation and psychosocial functioning. Front Psychiatry 2023; 14:1123046. [PMID: 36873206 PMCID: PMC9978481 DOI: 10.3389/fpsyt.2023.1123046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/25/2023] [Indexed: 02/18/2023] Open
Abstract
INTRODUCTION Suboptimal effort-based decision-making with reduced willingness to expend effort for high-probability/high-value reward is observed in schizophrenia patients and is related to diminished motivation, but is understudied in schizotypy. This study aimed to examine effort-allocation in schizotypy individuals and its association with amotivation and psychosocial functioning. METHODS We recruited 40 schizotypy individuals and 40 demographically-matched healthy controls, based on Schizotypal Personality Questionnaire-Brief (SPQ-B) score (top and bottom 10% SPQ-B scores, respectively), from 2400 young people aged 15-24 years participating a population-based mental health survey in Hong Kong and examined effort-allocation using the Effort Expenditure for Reward Task (EEfRT). Negative / amotivation symptoms and psychosocial functioning were assessed by the Brief Negative Symptom Scale (BNSS) and the Social Functioning and Occupational Assessment Scale (SOFAS), respectively. Schizotypy individuals were categorized into high-amotivation and low-amotivation groups based on a median-split of BNSS amotivation domain score. RESULTS Our results showed no main group effect (in either two or three-group comparison) on effort task performance. Three-group comparison analyses on selected EEfRT performance indices revealed that high-amotivation schizotypy individuals displayed significantly less increase in effortful options from low-value to high-value reward (reward-difference score) and from low-probability/low-value to high-probability/high-value reward (probability/reward-difference score) than low-amotivation individuals and controls. Correlation analyses demonstrated trend-wise significance between BNSS amotivation domain score and several EEfRT performance indices in schizotypy group. Schizotypy individuals with poorer psychosocial functioning tended to exhibit smaller probability/reward-difference score relative to other two groups. DISCUSSION Our findings indicate subtle effort-allocation abnormalities in schizotypy individuals with high levels of diminished motivation, and suggest the link between laboratory-based effort-cost measures and real-world functional outcome.
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Affiliation(s)
- Ryan Sai Ting Chu
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Co Co Ho Yi Tong
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Corine Sau Man Wong
- LKS Faculty of Medicine, School of Public Health, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Wing Chung Chang
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China.,State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Wesley Chor Yin Tang
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Charlotte Cheuk Lok Chan
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Simon S Y Lui
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Lai Ming Hui
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Yi Nam Suen
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Kit Wa Chan
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China.,State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Ho Ming Lee
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Eric Yu Hai Chen
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China.,State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
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17
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Kemp KC, Kaczorowski JA, Burgin CJ, Raulin ML, Lynam DR, Sleep C, Miller JD, Barrantes-Vidal N, Kwapil TR. Association of Multidimensional Schizotypy with PID-5 Domains and Facets. J Pers Disord 2022; 36:680-700. [PMID: 36454161 DOI: 10.1521/pedi.2022.36.6.680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
The underlying vulnerability for schizophrenia-spectrum disorders is expressed across a continuum of clinical and subclinical symptoms referred to as schizotypy. Schizotypy is a multidimensional construct with positive, negative, and disorganized dimensions. The present study examined associations of positive, negative, and disorganized schizotypy with pathological personality traits and facets assessed by the Personality Inventory for DSM-5 (PID-5) in 1,342 young adults. As hypothesized, positive schizotypy was associated with the PID-5 psychoticism domain and facets, negative schizotypy was associated with the detachment domain and facets and the restricted affectivity facet, and disorganized schizotypy's strongest associations were with the distractibility and eccentricity facets and the negative affect domain. The PID-5 facets accounted for upwards of two thirds of the variance in each schizotypy dimension. The authors conclude by providing regression-based algorithms for computing positive, negative, and disorganized schizotypy scores based on the PID-5 facets.
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Affiliation(s)
- Kathryn C Kemp
- University of Illinois at Urbana-Champaign, Champaign, Illinois
| | | | | | | | | | | | | | | | - Thomas R Kwapil
- University of Illinois at Urbana-Champaign, Champaign, Illinois.,University of North Carolina at Greensboro, Greensboro, North Carolina
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18
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Barkus E. Invited discussant comments during the UCL-Penn Global COVID Study webinar 'How Do We Trust (Again): Paranoia and Mental Health': part 1 of 2. UCL OPEN ENVIRONMENT 2022; 4:e002. [PMID: 37228480 PMCID: PMC10208343 DOI: 10.14324/111.444/ucloe.100002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The article provides commentary on Wong et al.'s investigation of the relationship between schizotypal traits, social mistrust and aggression, mental and physical health outcomes across three waves of data collection commencing in April 2020. The researchers aimed to consider the nature of the relationship between these variables and the stability of these relationships as coronavirus (Covid-19) restrictions fluctuated over time. Their results suggested that loneliness reflects a hub which links the trait variables of schizotypal and social mistrust to aggression and mental and physical health symptoms. Their network did not vary by demographic factors nor wave of data collection, suggesting that stable individual differences were driving results. Their results propose that interventions which increase social connection could provide positive health benefits as well as decreasing aggression (via reductions in social mistrust). Their data contributes to understanding about how schizotypal traits link to outcomes under conditions of social stress.
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Affiliation(s)
- Emma Barkus
- Department of Psychology, Northumbria University, Newcastle upon Tyne, UK
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19
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Webster L, Norman C, Jones G, Marriott M. Mediating role for metacognitive processes in the relationship between schizotypy and anxiety and depression symptoms. Cogn Neuropsychiatry 2022; 27:393-410. [PMID: 35975632 DOI: 10.1080/13546805.2022.2108388] [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: 01/31/2023]
Abstract
Introduction: Depression and anxiety symptoms are highly prevalent in schizophrenia-spectrum disorders and are commonly associated with schizotypy in non-clinical samples. However, it remains unclear what factors could be contributing to the relationships between schizotypy and anxiety and depression symptoms. Using path analysis, we explored the complex interplay between schizotypy, metacognitive beliefs, cognitive insight, and symptoms of emotional distress.Methods: Self-report data of schizotypy, metacognitive beliefs, cognitive insight, depression, and anxiety symptoms were collected from 344 participants from a predominantly student sample.Results: Path analysis confirmed unique associations between schizotypy dimensions, metacognitive beliefs, and cognitive insight. Furthermore, negative beliefs about worry mediated the link between the schizotypy dimensions, unusual experiences, cognitive disorganisation, and introvertive anhedonia and both depression and anxiety symptoms. Lack of cognitive confidence also mediated the relationship between cognitive disorganisation and depression symptoms. Finally, the cognitive insight subcomponent self-reflectiveness mediated the relationship between unusual experiences and cognitive disorganisation and anxiety.Conclusions: This study significantly furthers our understanding of the complex relationship between schizotypy, metacognitive processes, and emotional distress. Our findings also provide support for interventions which modify metacognitive beliefs and self-reflectiveness, which may prove beneficial for treatment in clinical settings.
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Affiliation(s)
- Lucy Webster
- Department of Psychology, School of Social Sciences, Nottingham Trent University, Nottingham, UK
| | - Christine Norman
- Department of Psychology, School of Social Sciences, Nottingham Trent University, Nottingham, UK
| | - Gary Jones
- Department of Psychology, School of Social Sciences, Nottingham Trent University, Nottingham, UK
| | - Mike Marriott
- Department of Psychology, School of Social Sciences, Nottingham Trent University, Nottingham, UK
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20
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Escolà-Gascón Á, Wright AC, Houran J. 'Feeling' or 'sensing' the future? Testing for anomalous cognitions in clinical versus healthy populations. Heliyon 2022; 8:e11303. [PMID: 36387525 PMCID: PMC9641201 DOI: 10.1016/j.heliyon.2022.e11303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/04/2022] [Accepted: 10/25/2022] [Indexed: 11/06/2022] Open
Abstract
In the study and treatment of psychosis, emotional intelligence (EI) and thinking styles are important patient characteristics for successful outcomes in clinical intervention. Anticipation of unpredictable stimuli (AUS) may be understood as an anomalous perception and anomalous cognition in which an individual supposedly senses and recognizes future stimuli in an unexpected way, also referred to as “hunches or premonitions.” This examined the roles of EI and thinking styles in AUSs in convenience samples of healthy participants (n = 237) versus patients diagnosed with psychosis (n = 118). We adjusted several quadratic and exponential regression models according to the obtained functions. Group means were also compared to examine differences in EI scores for participants with psychosis compared to healthy participants. In the healthy group, EI predicted AUSs with a weight between 42% and 58%. Thinking styles were not correlated with AUSs. However, EI was not correlated with AUSs in the clinical group. Patients with psychosis tended to score higher on AUSs and lower on EI and thinking styles compared to participants in the healthy group. We discuss EI as a variable that can contextualize some anomalous perceptions which are otherwise difficult to classify or measure within the classic psychosis continuum model.
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21
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Christensen R, Haenschel C, Gaigg SB, Fett AKJ. Loneliness, positive, negative and disorganised Schizotypy before and during the COVID-19 pandemic. Schizophr Res Cogn 2022; 29:100243. [PMID: 35223431 PMCID: PMC8860670 DOI: 10.1016/j.scog.2022.100243] [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] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 02/11/2022] [Accepted: 02/11/2022] [Indexed: 11/29/2022] Open
Abstract
Loneliness is common in psychosis and occurs along a continuum. Here we investigate inter-relationships between loneliness, three-dimensional schizotypy, and depressive symptoms before and during the COVID-19 pandemic. The sample included 507 university students (48.3% participated before and 51.7% during the COVID-19 pandemic) who completed the Multidimensional Schizotypy Scale-Brief, the Counseling Center Assessment of Psychological Symptoms depression scale and the University of California, Los Angeles Loneliness Scale. Schizotypy and depression scores were regressed onto loneliness individually and in multiple regressions. The cohorts did not differ in any of the schizotypy domains (all p > .29). Depressive symptoms (p = .05) and loneliness (p = .006) were higher during the pandemic than before. Across cohorts, loneliness was significantly associated with positive (β = 0.23, p < .001), negative (β = 0.44, p < .001), and disorganised schizotypy (β = 0.44, p < .001), and with depression (β = 0.72, p < .001). Schizotypy together explained a significant amount of variance in loneliness (R2 = 0.26), with significant associations with positive (β = −0.09, p = .047), negative (β = 0.31, p < .001) and disorganised schizotypy (β = 0.34, p < .001). When depression was included (β = 0.69, p < .001), only positive (β = −0.09, p = .008) and negative schizotypy (β = 0.22, p < .001) significantly predicted loneliness. When all schizotypy dimensions and depression were considered together, only negative schizotypy and depression significantly predicted loneliness. Loneliness and depressive symptoms were higher during the pandemic, but this did not relate to cohort differences in schizotypy. Loneliness is uniquely associated with negative schizotypy and depression, but not disorganised schizotypy. Certain aspects of positive schizotypy may protect against loneliness. Loneliness and depressive symptoms were higher in students during the COVID-19 pandemic than before. Cohorts of students assessed before and during the pandemic showed similar levels of schizotypy.
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Affiliation(s)
- Ronja Christensen
- Department of Psychology, City, University of London, London ECIV 0HB, UK.,King's College London, Institute of Psychiatry, Psychology and Neuroscience, Department of Psychosis Studies, De Crespigny Park, SE5 8AF London, UK
| | - Corinna Haenschel
- Department of Psychology, City, University of London, London ECIV 0HB, UK
| | - Sebastian B Gaigg
- Department of Psychology, City, University of London, London ECIV 0HB, UK
| | - Anne-Kathrin J Fett
- Department of Psychology, City, University of London, London ECIV 0HB, UK.,King's College London, Institute of Psychiatry, Psychology and Neuroscience, Department of Psychosis Studies, De Crespigny Park, SE5 8AF London, UK
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22
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Báthori N, Polner B, Simor P. Schizotypy unfolding into the night? Schizotypal traits and daytime psychotic-like experiences predict negative and salient dreams. Schizophr Res 2022; 246:17-25. [PMID: 35696857 DOI: 10.1016/j.schres.2022.05.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 03/07/2022] [Accepted: 05/21/2022] [Indexed: 10/18/2022]
Abstract
Symptoms of insomnia and frequent nightmares are prevalent in psychotic disorders, and are associated with psychotic-like experiences (PLEs) in the non-clinical population. Whereas the role of impaired sleep in psychosis was extensively examined by longitudinal and interventional approaches, studies on the association between psychosis and dream quality are scarce, and mainly cross-sectional. We conducted a three-week long prospective study in a group of healthy adults (N = 55), assessed schizotypal traits, daily PLEs, and the emotional quality of dreams recalled in the morning (N = 490). We extracted the latent factors of schizotypal traits and dream emotions, and examined the predictive value of trait-and state-like variables on day-to-day reports of PLEs and dream quality. PLEs reported in the evening predicted emotionally more negative and salient dream reports the following morning. On the other hand, the quality of dreams were not predictive of PLEs reported later during the day. Schizotypal personality traits were differentially associated with dream quality: Introvertive Anhedonia, Cognitive Disorganization, and General-Disorganized schizotypy were linked to more negative dream valence, whereas Unusual Experiences were associated with more salient dreams. Our findings highlight the relevance of the multidimensional nature of schizotypal traits, the role of different facets of schizotypy in daytime and nocturnal mental experiences, and the day-to-day associations between PLEs and dream affect. GENERAL SCIENTIFIC SUMMARIES (GSS): The aim of the study was to examine the temporal associations between psychotic-like experiences and dream emotions, taking into account the trait factors of schizotypy. Psychotic-like experiences during the evening hours predicted reporting more negative and salient dreams the following morning, and schizotypal personality traits were differentially associated with the dimensions of dream emotions.
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Affiliation(s)
- Noémi Báthori
- Department of Cognitive Science, Faculty of Natural Sciences, Budapest University of Technology and Economics, Hungary
| | - Bertalan Polner
- Department of Cognitive Science, Faculty of Natural Sciences, Budapest University of Technology and Economics, Hungary; Institute of Psychology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Péter Simor
- Institute of Psychology, ELTE Eötvös Loránd University, Budapest, Hungary; UR2NF, Neuropsychology and Functional Neuroimaging Research Unit at CRCN-Center for Research in Cognition and Neurosciences and UNI-ULB Neurosciences Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium.
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23
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Monsonet M, Rockwood NJ, Kwapil TR, Barrantes-Vidal N. Psychological Pathways to Paranoia and Psychotic-Like Experiences in Daily-Life: The Mediating Role of Distinct Affective Disturbances. Schizophr Bull 2022; 48:1053-1065. [PMID: 35759215 PMCID: PMC9434429 DOI: 10.1093/schbul/sbac071] [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] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND HYPOTHESIS Influential models of psychosis indicate that the impact of putative causal factors on positive symptoms might be explained partly through affective disturbances. We aimed to investigate whether pathways from stress and self-esteem to positive symptoms, as well as reversal pathways from symptoms to stress and self-esteem, were mediated through specific affective disturbances across the extended psychosis phenotype. STUDY DESIGN Using experience sampling methodology, 178 participants (65 high-schizotypy, 74 at-risk mental state, and 39 first-episode psychosis) were assessed on levels of momentary stress, self-esteem, anxiety, sadness, psychotic-like experiences (PLE), and paranoia. Multilevel mediation models were fit to examine indirect effects of each of these pathways. Considering evidence of mediation, each indirect pathway will be combined in a single model to explore their relative contributions. STUDY RESULTS Anxiety, sadness, and self-esteem mediated the pathways from stress to PLE and paranoia in daily-life. In the pathway to paranoia, sadness, and self-esteem showed larger contributions than anxiety. Pathways from self-esteem to PLE and paranoia were mediated by anxiety and sadness, the later showing a larger contribution. Pathways from symptoms to stress, but not from symptoms to self-esteem, were differently explained by emotional states; sadness lost its mediating effect and anxiety was the most important mediator. Few differences across groups were found. CONCLUSIONS This study lends support to psychological models of psychosis that highlight the relevance of affective disturbances in the risk and expression of psychosis. Furthermore, specific influences of different negative emotional states were identified, which could enhance psychological treatments.
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Affiliation(s)
- Manel Monsonet
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Thomas R Kwapil
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Neus Barrantes-Vidal
- To whom correspondence should be addressed; Departament de Psicologia Clínica i de la Salut, Facultat de Psicologia, Edifici B, Universitat Autònoma de Barcelona, 08193 Bellaterra (Cerdanyola del Vallès), Barcelona, Spain; tel: 34-93-581-38-64, fax: 34-93-581-21-25, e-mail:
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24
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Masucci MD, Martin V, Le TP, Cohen AS. Negative schizotypy attenuates the effect of momentary stress on social dysfunction related to COVID-19 social distancing. Schizophr Res 2022; 243:24-31. [PMID: 35231831 PMCID: PMC9189049 DOI: 10.1016/j.schres.2022.02.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 01/15/2022] [Accepted: 02/18/2022] [Indexed: 10/19/2022]
Abstract
Schizotypy is associated with a broad range of motivational and social dysfunctions. However, there is reason to suspect that negative schizotypy may limit social dysfunction in specific contexts that typically increase isolation and loneliness. We analyzed whether positive, negative and disorganized facets of schizotypy would mitigate detrimental reactions to stress in the context of a global stressor (the COVID-19 pandemic) that has widely necessitated social and physical isolation. Responses to two measures of schizotypy were compared to ecological momentary assessments of social dysfunction for 85 undergraduates using multilevel modelling techniques. Negative schizotypy moderated the relation between momentary stress and loss of social support, such that negative schizotypy limited the magnitude of social dysfunction stemming from increases in momentary stress. This pattern was not seen for other facets of schizotypy. Implications for the treatment and measurement of schizotypy symptoms are discussed.
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Affiliation(s)
- Michael D. Masucci
- Department of Psychology, Louisiana State University, Baton Rouge, LA, USA,Address correspondence to: Michael Masucci, Department of Psychology, Louisiana State University, 236 Audubon Hall, Baton Rouge, LA 70808,
| | - Victoria Martin
- The Graduate Center, City University of New York, New York, NY, USA
| | - Thanh P. Le
- Department of Psychology, Louisiana State University, Baton Rouge, LA, USA,Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, UCLA, Los Angeles, CA
| | - Alex S. Cohen
- Department of Psychology, Louisiana State University, Baton Rouge, LA, USA
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25
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Premkumar P, Kumari V. Rejection sensitivity and its relationship to schizotypy and aggression: current status and future directions. Curr Opin Behav Sci 2022. [DOI: 10.1016/j.cobeha.2022.101110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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26
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Zandbagleh A, Mirzakuchaki S, Daliri MR, Premkumar P, Sanei S. Classification of Low and High Schizotypy Levels via Evaluation of Brain Connectivity. Int J Neural Syst 2022; 32:2250013. [PMID: 35236254 DOI: 10.1142/s0129065722500137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Schizotypy is a latent cluster of personality traits that denote a vulnerability for schizophrenia or a type of spectrum disorder. The aim of the study is to investigate parametric effective brain connectivity features for classifying high versus low schizotypy (LS) status. Electroencephalography (EEG) signals are recorded from 13 high schizotypy (HS) and 11 LS participants during an emotional auditory odd-ball task. The brain connectivity signals for machine learning are taken after the settlement of event-related potentials. A multivariate autoregressive (MVAR)-based connectivity measure is estimated from the EEG signals using the directed transfer functions (DTFs) method. The values of DTF power in five standard frequency bands are used as features. The support vector machines (SVMs) revealed significant differences between HS and LS. The accuracy, specificity, and sensitivity of the results using SVM are as high as 89.21%, 90.3%, and 88.2%, respectively. Our results demonstrate that the effective brain connectivity in prefrontal/parietal and prefrontal/frontal brain regions considerably changes according to schizotypal status. These findings prove that the brain connectivity indices offer valuable biomarkers for detecting schizotypal personality. Further monitoring of the changes in DTF following the diagnosis of schizotypy may lead to the early identification of schizophrenia and other spectrum disorders.
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Affiliation(s)
- Ahmad Zandbagleh
- School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Sattar Mirzakuchaki
- School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Mohammad Reza Daliri
- School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Preethi Premkumar
- Division of Psychology, School of Applied Sciences, London Southbank University, London, UK
| | - Saeid Sanei
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, UK
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27
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Sun X, So SHW, Chung LKH, Chiu CD, Chan RCK, Leung PWL. Longitudinal bifactor modeling of anxiety, depression and schizotypy - The role of rumination as a shared mechanism. Schizophr Res 2022; 240:153-161. [PMID: 35030443 DOI: 10.1016/j.schres.2022.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 12/31/2021] [Accepted: 01/02/2022] [Indexed: 11/27/2022]
Abstract
A bifactor model with a general (p) factor reflecting shared variance and specific factors reflecting additional variance in individual symptoms has been introduced to explain common co-occurrence among anxiety, depression and schizotypy. However, longitudinal evidence is lacking and the validity of bifactor modeling is debatable. The current study aimed to examine the presence of the p factor together with specific factors in accounting for relationships between anxiety, depression and schizotypy both cross-sectionally and longitudinally, and to investigate the relationship between these factors and rumination. A validated sample of university students were surveyed on levels of anxiety, depression, schizotypy and rumination at baseline (N = 2291), one year (N = 1833) and two years (N = 1656). Models were estimated using exploratory structural equation modeling (ESEM) and compared at each time point. Longitudinal invariance of the best-fitting model was examined and all potential within- and between-factor stability pathways were tested in an SEM framework. A bifactor model with a p factor and four specific factors (representing residual information of composite anxiety and depression, cognitive-perceptual, interpersonal and disorganized schizotypy respectively) consistently outperformed a correlated-factors model. The bifactor structure appeared longitudinally stable. Within-factor stabilities were moderate, and between-factor pathways reflected a few significant interactions, mostly involving the p factor. Rumination was independently associated with p and four specific factors at each time point. Therefore, there is a p factor accounting for concurrent and sequential co-occurrence of anxiety, depression and schizotypy. Rumination explained partly the p and specific factors. Transdiagnostic interventions should target rumination.
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Affiliation(s)
- Xiaoqi Sun
- Department of Psychology, Cognition and Human Behavior Key Laboratory of Hunan Province, Hunan Normal University, Changsha, China; Department of Psychology, The Chinese University of Hong Kong, Hong Kong, China
| | - Suzanne H W So
- Department of Psychology, The Chinese University of Hong Kong, Hong Kong, China.
| | - Lawrence K H Chung
- Department of Psychology, The Chinese University of Hong Kong, Hong Kong, China
| | - Chui-De Chiu
- Department of Psychology, The Chinese University of Hong Kong, Hong Kong, China
| | - Raymond C K Chan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Chinese Academy of Sciences, Beijing, China; Department of Psychology, the University of Chinese Academy of Sciences, Beijing, China; CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Patrick W L Leung
- Department of Psychology, The Chinese University of Hong Kong, Hong Kong, China
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28
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Escolà-Gascón Á. Impact of conspiracist ideation and psychotic-like experiences in patients with schizophrenia during the COVID-19 crisis. J Psychiatr Res 2022; 146:135-148. [PMID: 34979358 PMCID: PMC9749884 DOI: 10.1016/j.jpsychires.2021.12.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 11/29/2021] [Accepted: 12/10/2021] [Indexed: 10/19/2022]
Abstract
Conspiratorial belief is a type of argument that accepts implausible explanations in situations of great uncertainty or mystery. Claiming that the coronavirus is an artificial fabrication of laboratories is an example of conspiracist belief. The aim of this research was to analyze the impact of conspiracist ideation and psychotic-like experiences in patients with schizophrenia, patients with other mental disorders, and participants with no psychiatric history with a 132-day follow-up during the COVID-19 crisis. Analysis of variance (ANOVA) was applied and Bayesian inferences were carried out. The results conclude that conspiracist ideation and psychotic-like experiences increased significantly after 132 days of social-health restrictions in the general population. However, psychotic-like experiences did not increase in patients with schizophrenia. Conspiracist ideation has a quantitative degradation similar to the continuum model of psychosis; it is present both in patients with schizophrenia and in those participants with no clinical history. The psychopathological value of conspiracist ideation within the spectrum of psychosis is discussed.
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Affiliation(s)
- Álex Escolà-Gascón
- School of Communication and International Relations, Blanquerna, Ramon Llull University, Barcelona, Spain; School of Psychology, Education and Sport Sciences, Blanquerna, Ramon Llull University, Barcelona, Spain.
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29
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Schwartz EK, Le TP, Cohen AS. Sharing positive events: Ecological momentary assessment of emotion regulation via social capitalization in schizotypy. Psychiatry Res 2022; 308:114377. [PMID: 35021121 DOI: 10.1016/j.psychres.2021.114377] [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: 05/06/2021] [Revised: 12/08/2021] [Accepted: 12/28/2021] [Indexed: 12/01/2022]
Abstract
Emotional deficits are prominent in schizophrenia-spectrum psychopathology and linked with poorer outcomes. Schizotypy, an underlying personality organization that putatively confers vulnerability to developing schizophrenia, has been associated with increased negative affect, decreased positive affect, and some difficulty with emotion regulation. This study explored the role of social capitalization, the upregulation of positive emotion when positive life events are shared with others, in schizotypy. Social capitalization is relevant for schizotypy given its association with social functioning and social motivation abnormalities. Using mobile assessment methods, a sample of college students (N=73) completed daily surveys via a mobile application two times per day for seven days and made daily ratings of mood and answered questions regarding any capitalization attempt for a positive event. Results indicated that higher schizotypy and not sharing an event were independently associated with lower happiness and increased sadness and anxiety. When an event was shared, lower schizotypy and supportive/enthusiastic response perception were independently associated with increased happiness. No significant interactions were observed between schizotypy and social capitalization variables. Future research would benefit from exploring the role that other common schizotypy concomitants, e.g., social anxiety or social disconnection, play in social capitalization and the extent this is helped or hindered via mass personal technological mediums.
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Affiliation(s)
- Elana K Schwartz
- Mental Illness Research, Education and Clinical Center, Veterans Affairs San Diego Healthcare System/University of California, 3350 La Jolla Village Drive, Building 13, San Diego, CA 92161, United States; Department of Psychology, Louisiana State University, Baton Rouge, LA, United States.
| | - Thanh P Le
- Department of Psychology, Louisiana State University, Baton Rouge, LA, United States
| | - Alex S Cohen
- Department of Psychology, Louisiana State University, Baton Rouge, LA, United States; Center for Computation and Technology, Louisiana State University, Baton Rouge, LA, United States
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30
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Rbeiz KS, Clark HE, Kemp KC, Bathery AJ, Monette MA, Barrantes-Vidal N, Kwapil TR. The association of multidimensional schizotypy with symptoms and impairment across racial groups. Personal Ment Health 2022; 16:79-89. [PMID: 34528403 DOI: 10.1002/pmh.1528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/23/2021] [Accepted: 09/01/2021] [Indexed: 11/12/2022]
Abstract
The assessment of schizotypy and schizophrenia-spectrum psychopathology has historically been adversely impacted by multiple forms of measurement bias, including racial bias. The Multidimensional Schizotypy Scale (MSS) was developed using modern scale construction methods to minimize measurement bias in the assessment of schizotypic traits. However, studies have not examined the validity of the measurement across different racial groups. The present study examined whether the associations of MSS positive, negative, and disorganized schizotypy subscales with interview-assessed ratings of functioning, schizophrenia-spectrum personality traits, and depressive disorders were generally comparable across nonclinically ascertained samples of Black (n = 46), Asian (n = 87), and White (n = 116) young adults. Consistent with previous findings, all three schizotypy subscales were associated with impairment and schizotypal and paranoid traits. Negative schizotypy was associated with schizoid traits, and disorganized schizotypy was associated with depressive disorders. These associations were comparable across the racial groups, supporting the use of the MSS in these groups. Culturally and empirically valid assessments are essential for providing accurate assessments across racial/ethnic groups and reducing the risk of overpathologizing people of color. The present findings support the cross-cultural validity of the MSS; however, future studies should expand upon these findings by including more diverse samples and longitudinal designs.
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Affiliation(s)
- Katrina S Rbeiz
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA
| | - Haley E Clark
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA
| | - Kathryn C Kemp
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA
| | - Alyssa J Bathery
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA
| | - Mahogany A Monette
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA
| | - Neus Barrantes-Vidal
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Thomas R Kwapil
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA.,Department of Psychology, University of North Carolina at Greensboro, Greensboro, North Carolina, USA
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31
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Kemp KC, Raulin ML, Burgin CJ, Barrantes-Vidal N, Kwapil TR. Associations of Multiple Measures of Openness to Experience with a Brief Questionnaire of Positive, Negative, and Disorganized Schizotypy. JOURNAL OF INDIVIDUAL DIFFERENCES 2022. [DOI: 10.1027/1614-0001/a000348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Abstract. The vulnerability for schizophrenia-spectrum disorders is expressed across a continuum of clinical and subclinical symptoms and impairment known as schizotypy. Schizotypy is a multidimensional construct with positive, negative, and disorganized dimensions. Openness to experience offers a useful personality domain for exploring multidimensional schizotypy. This study examined the factor structure of openness and its relation to schizotypy using the Multidimensional Schizotypy Scale-Brief (MSS-B) in a sample of 2,236 adults. Positive schizotypy was broadly associated with elevated openness and negative schizotypy was generally associated with diminished openness. Principal components analysis of 15 openness facets replicated the four-factor structure of openness including Fantasy/Feelings, Eccentricity, Nontraditionalism, and Ideas factors. All three schizotypy dimensions were associated with Eccentricity. Positive schizotypy was associated with Fantasy/Feelings, whereas negative schizotypy was inversely associated with Fantasy/Feelings. Results support the construct validity of the MSS-B, use of alternative openness measures in examining schizotypy, and the multidimensional structures of schizotypy and openness.
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Affiliation(s)
- Kathryn C. Kemp
- Department of Psychology, University of Illinois at Urbana-Champaign, IL, USA
| | | | - Chris J. Burgin
- Department of Counseling & Psychology, Tennessee Tech University, Cookeville, TN, USA
| | - Neus Barrantes-Vidal
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Spain
| | - Thomas R. Kwapil
- Department of Psychology, University of Illinois at Urbana-Champaign, IL, USA
- Department of Psychology, University of North Carolina at Greensboro, NC, USA
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32
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Escolà-Gascón Á, Wright AC. Psychotic behaviors during COVID-19: Should conspiracist ideation be included within the continuum model of psychosis? Schizophr Res 2021; 237:190-191. [PMID: 34537604 DOI: 10.1016/j.schres.2021.09.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 08/31/2021] [Accepted: 09/06/2021] [Indexed: 01/03/2023]
Affiliation(s)
| | - Abigail C Wright
- Center of Excellence for Psychosocial & Systemic Research, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
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33
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Evermann U, Gaser C, Meller T, Pfarr J, Grezellschak S, Nenadić I. Nonclinical psychotic-like experiences and schizotypy dimensions: Associations with hippocampal subfield and amygdala volumes. Hum Brain Mapp 2021; 42:5075-5088. [PMID: 34302409 PMCID: PMC8449098 DOI: 10.1002/hbm.25601] [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] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 12/02/2022] Open
Abstract
Schizotypy and psychotic-like experiences (PLE) form part of the wider psychosis continuum and may have brain structural correlates in nonclinical cohorts. This study aimed to compare the effects of differential schizotypy dimensions, PLE, and their interaction on hippocampal subfields and amygdala volumes in the absence of clinical psychopathology. In a cohort of 367 psychiatrically healthy individuals, we assessed schizotypal traits using the Oxford-Liverpool Inventory of Life Experiences (O-LIFE) and PLE using the short form of the Prodromal Questionnaire (PQ-16). Based on high-resolution structural MRI scans, we used automated segmentation to estimate volumes of limbic structures. Sex and total intracranial volume (Step 1), PLE and schizotypy dimensions (Step 2), and their interaction terms (Step 3) were entered as regressors for bilateral amygdala and hippocampal subfield volumes in hierarchical multiple linear regression models. Positive schizotypy, but not PLE, was negatively associated with left amygdala and subiculum volumes. O-LIFE Impulsive Nonconformity, as well as the two-way interaction between positive schizotypy and PLE, were associated with larger left subiculum volumes. None of the estimators for right hemispheric hippocampal subfield volumes survived correction for multiple comparisons. Our findings support differential associations of hippocampus subfield volumes with trait dimensions rather than PLE, and support overlap and interactions between psychometric positive schizotypy and PLE. In a healthy cohort without current psychosis risk syndromes, the positive association between PLE and hippocampal subfield volume occurred at a high expression of positive schizotypy. Further studies combining stable, transient, and genetic parameters are required.
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Affiliation(s)
- Ulrika Evermann
- Cognitive Neuropsychiatry Lab, Department of Psychiatry and PsychotherapyPhilipps‐Universität MarburgMarburgGermany
- Center for Mind, Brain and Behavior (CMBB)MarburgGermany
| | - Christian Gaser
- Department of Psychiatry and PsychotherapyJena University HospitalJenaGermany
- Department of NeurologyJena University HospitalJenaGermany
| | - Tina Meller
- Cognitive Neuropsychiatry Lab, Department of Psychiatry and PsychotherapyPhilipps‐Universität MarburgMarburgGermany
- Center for Mind, Brain and Behavior (CMBB)MarburgGermany
| | - Julia‐Katharina Pfarr
- Cognitive Neuropsychiatry Lab, Department of Psychiatry and PsychotherapyPhilipps‐Universität MarburgMarburgGermany
- Center for Mind, Brain and Behavior (CMBB)MarburgGermany
| | - Sarah Grezellschak
- Cognitive Neuropsychiatry Lab, Department of Psychiatry and PsychotherapyPhilipps‐Universität MarburgMarburgGermany
- Center for Mind, Brain and Behavior (CMBB)MarburgGermany
- Marburg University HospitalUKGMMarburgGermany
| | - Igor Nenadić
- Cognitive Neuropsychiatry Lab, Department of Psychiatry and PsychotherapyPhilipps‐Universität MarburgMarburgGermany
- Center for Mind, Brain and Behavior (CMBB)MarburgGermany
- Marburg University HospitalUKGMMarburgGermany
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34
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Wang GY, Premkumar P, Lee CQ, Griffiths MD. The Role of Criticism in Expressed Emotion Among Psychoactive Substance Users: an Experimental Vignette Study. Int J Ment Health Addict 2021. [DOI: 10.1007/s11469-021-00591-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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35
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Polner B, Hupuczi E, Kéri S, Kállai J. Adaptive and maladaptive features of schizotypy clusters in a community sample. Sci Rep 2021; 11:16653. [PMID: 34404855 PMCID: PMC8371157 DOI: 10.1038/s41598-021-95945-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 06/25/2021] [Indexed: 11/17/2022] Open
Abstract
Schizotypal personality traits correlate with psychopathology and impaired functional outcome. Yet advantageous aspects of positive schizotypy may exist which could promote resilience and creativity, and several studies have identified a high positive but low negative schizotypy group with some signs of adaptation. The aim of our study was to clarify whether such individuals demonstrate only traits associated with well-being, or they also have traits that predict impairment. Participants (N = 643 students, 71.5% female) completed measures of schizotypy, resilience, self-esteem, self-concept clarity, and absorption. We identified four clusters: an overall low schizotypy, an overall high schizotypy, a disorganised-interpersonal schizotypy and a positive schizotypy cluster. The overall high schizotypy cluster seemed to be the most vulnerable as it was the least resilient and showed widespread maladaptation, whereas the high positive schizotypy cluster had intact self-esteem and high resilience and its elevated absorption may hold the promise for adaptive outcomes such as creativity and positive spirituality. However, the high positive schizotypy cluster lacked self-concept clarity. The results suggest that individuals showing high positive and low negative schizotypy demonstrate features promoting mental well-being to an extent that is higher than in all the other clusters, while their self-concept impairment is similar to that observed in the high and the disorganised-interpersonal schizotypy clusters. Better understanding of these factors could be informative for prevention and treatment of psychosis-spectrum disorders.
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Affiliation(s)
- Bertalan Polner
- Department of Cognitive Science, Budapest University of Technology and Economics, Budapest, Hungary.
| | - Ernő Hupuczi
- Cognitive Neuroscience Research Group, Medical Faculty, Institute of Behavioral Sciences, University of Pécs, Pecs, Hungary
| | - Szabolcs Kéri
- Department of Cognitive Science, Budapest University of Technology and Economics, Budapest, Hungary.,National Institute of Psychiatry and Addictions, Budapest, Hungary.,Department of Physiology, University of Szeged, Szeged, Hungary
| | - János Kállai
- Cognitive Neuroscience Research Group, Medical Faculty, Institute of Behavioral Sciences, University of Pécs, Pecs, Hungary
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Fekih-Romdhane F, Dissem N, Cheour M. How did Tunisian university students cope with fear of COVID-19? A comparison across schizotypy features. PERSONALITY AND INDIVIDUAL DIFFERENCES 2021; 178:110872. [PMID: 33814659 PMCID: PMC8009054 DOI: 10.1016/j.paid.2021.110872] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 03/18/2021] [Accepted: 03/21/2021] [Indexed: 11/23/2022]
Abstract
BACKGROUND Little consideration has been given to the impact of COVID-19 on people at risk of psychosis despite their particular preexisting vulnerability. We aimed to examine the role of coping strategies in determining the levels of fear in nonclinical students with high levels of self-reported schizotypal personality traits as compared to low-schizotypy controls. METHOD This was a cross-sectional survey. The Schizotypal Personality Questionnaire, the Fear of COVID-19 Scale and The Brief-Coping Orientation to Problems Experienced were used. RESULTS High-schizotypy students had significantly higher maladaptive strategies scores and higher levels of fear of COVID-19 as compared to low-schizotypy students. Multivariate analyses have shown that high-schizotypy individuals were likely to rely on coping responses that are maladaptive (venting) and have potential exacerbating effects on fear of COVID-19, whereas low-schizotypy individuals were likely to use adaptive responses (acceptance) that seemed to be effective in reducing fear of COVID-19. CONCLUSION This study provided preliminary cross-sectional evidence for a differential impact of COVID-19 on individuals according to their schizotypy features. However, larger longitudinal population-based studies are necessary to confirm our findings.
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Affiliation(s)
- Feten Fekih-Romdhane
- Tunis El Manar University, Faculty of Medicine of Tunis, Tunisia
- Razi Hospital, Mannouba, Tunisia
| | - Nouha Dissem
- Tunis El Manar University, Faculty of Medicine of Tunis, Tunisia
| | - Majda Cheour
- Tunis El Manar University, Faculty of Medicine of Tunis, Tunisia
- Razi Hospital, Mannouba, Tunisia
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37
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Convergent validity of the Chinese version of the Multidimensional Schizotypy Scale. Asian J Psychiatr 2021; 61:102671. [PMID: 33984618 DOI: 10.1016/j.ajp.2021.102671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 03/04/2021] [Accepted: 05/05/2021] [Indexed: 11/23/2022]
Abstract
Schizotypy is the latent personality reflecting the liability to schizophrenia. The Multidimensional Schizotypy Scale (MSS) is a newly developed questionnaire to measure the levels of schizotypy. The Chinese version of MSS has been developed and previous findings supported its structure validity. The present study aimed to examine the construct validity of the Chinese version of the MSS by correlating it with the Schizotypal Personality Questionnaire (SPQ). A total of 1359 university students completed the MSS and the SPQ online. The results of 1027 valid participants demonstrated that all MSS dimensions showed good internal consistency. The MSS positive dimension is strongly correlated with SPQ cognitive-perceptual factor, the MSS negative dimension with the SPQ interpersonal factor, and the MSS disorganized dimension with the SPQ disorganized factor. Taken together, our study provides evidence for construct validity of the Chinese version of the MSS.
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38
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Monsonet M, Kwapil TR, Barrantes-Vidal N. Exploring the Psychometric Properties and the Factor Structure of the Calgary Depression Scale for Schizophrenia Across the Schizotypy Continuum. Assessment 2021; 29:686-699. [PMID: 33522263 DOI: 10.1177/1073191120986622] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study evaluated the psychometric properties and factor structure of the Calgary Depression Scale for Schizophrenia (CDSS) across different levels of the schizotypy continuum. A combined sample of high-schizotypy, at-risk mental states, and patients with first-episode psychosis was assessed for depression and other clinical and functional outcomes. Additionally, experience sampling methodology was used to assess depressive and psychotic-like experiences in daily life. The CDSS exhibited solid internal consistency, validity, and discrimination between depressed and nondepressed participants. Confirmatory factor analyses and the associations of the resulting factors with clinical and functional measures supported a two-factor structure that included general depression and guilt factors. Furthermore, both factors of the CDSS were differentially related to positive and negative symptoms of psychosis in daily life. The CDSS appears to have two underlying psychopathological dimensions and to be a reliable and valid measure for assessing depression across the schizotypy continuum.
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Affiliation(s)
- Manel Monsonet
- Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, Spain
| | - Thomas R Kwapil
- University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Neus Barrantes-Vidal
- Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, Spain.,Sant Pere Claver-Fundació Sanitària, Barcelona, Spain.,Instituto de Salud Carlos III, Madrid, Spain
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39
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Kemp KC, Bathery AJ, Barrantes-Vidal N, Kwapil TR. A brief questionnaire measure of multidimensional schizotypy predicts interview-rated symptoms and impairment. PLoS One 2020; 15:e0237614. [PMID: 32776979 PMCID: PMC7416934 DOI: 10.1371/journal.pone.0237614] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 07/29/2020] [Indexed: 11/22/2022] Open
Abstract
The present study employed structured diagnostic interviews to assess the construct validity of the brief version of the Multidimensional Schizotypy Scale (MSS-B), which was developed to assess positive, negative, and disorganized dimensions of schizotypy. It was hypothesized that the MSS-B subscales would be associated with differential patterns of symptoms and impairment, comparable to findings for the full-length MSS. A total of 177 young adults completed structured diagnostic interviews assessing symptoms and impairment. As hypothesized, MSS-B positive schizotypy was significantly associated with interview ratings of positive (psychotic-like) symptoms, as well as schizotypal and paranoid personality disorder traits. MSS-B negative schizotypy was associated with interview ratings of negative symptoms, as well as schizoid, paranoid, and schizotypal traits. Furthermore, negative schizotypy predicted Cluster A personality disorder diagnoses. MSS-B disorganized schizotypy was associated with interview ratings of disorganized symptoms. All three schizotypy dimensions were associated with impaired functioning. This was the first study to evaluate the validity of the MSS-B using interview measures, and the pattern of findings for each MSS-B subscale was closely comparable to the findings for the full-length MSS. Contrary to our hypothesis, cannabis use was largely unassociated with psychotic-like symptoms and did not moderate the expression of the schizotypy dimensions. The MSS-B has good psychometric properties, high concordance with the full-length MSS, and good construct validity. Thus, it appears to be a promising brief alternative to traditional schizotypy measures.
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Affiliation(s)
- Kathryn C. Kemp
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL, United States of America
| | - Alyssa J. Bathery
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL, United States of America
| | - Neus Barrantes-Vidal
- Departament de Psicologia Clínica i de la Salut, Universitat Autònoma de Barcelona, Barcelona, Spain
- Sant Pere Claver–Fundació Sanitària, Barcelona, Spain
- CIBERSAM, Instituto de Salud Carlos III, Barcelona, Spain
| | - Thomas R. Kwapil
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL, United States of America
- Department of Psychology, University of North Carolina at Greensboro, Greensboro, NC, United States of America
- * E-mail:
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40
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Abstract
Background. Schizotypy is a multidimensional construct that is linked to the vulnerability for psychosis. Positive schizotypy includes having paranormal beliefs. Negative schizotypy includes social anhedonia. Disorganized schizotypy includes social anxiety and communication disorder. Schizotypy relates to depression and aggression. Family stress from high expressed emotion (EE; a rating of criticism, hostility, and emotional overinvolvement in a close relative toward a person showing signs of mental disorder) may mediate the link between schizotypy, depression and aggression. This study tested, using path analyses, the hypotheses that schizotypy predicts depression and aggression through high perceived EE as criticism and irritability (hypothesis 1) and praise and intrusiveness in a close relative (hypothesis 2). Methods. One hundred and four healthy participants listened to and rated the self-relevance of standard criticism and standard praise that denote EE. Participants rated their level of schizotypy, depression, aggression, and perceived EE in self-report questionnaires. Two path models tested the hypotheses. Results. Disorganized schizotypy, more than positive schizotypy, predicted the path to depression and aggression when perceived criticism and perceived EE-irritability were mediators. Disorganised schizotypy, more than negative schizotypy, predicted the path to depression and aggression when perceived praise and perceived EE-intrusiveness were mediators. Conclusions. Greater perceived criticism and less perceived praise in family communication explain the path from disorganized schizotypy (more so than positive or negative schizotypy) to depression and aggression. These findings indicate a need to consider the thought disorder-EE link as a potential contributor to depression and aggression in people with schizophrenia.
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Affiliation(s)
- Preethi Premkumar
- Department of Psychology, School of Social Sciences, Nottingham Trent University, Nottingham, United Kingdom
| | - Elizabeth Kuipers
- King's College London, Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, London, United Kingdom.,NIHR Biomedical Research Centre for Mental Health, South London and Maudsley NHS Foundation Trust, London, United Kingdom
| | - Veena Kumari
- Centre for Cognitive Neuroscience, College of Life and Health Sciences, Brunel University London, Uxbridge, United Kingdom
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41
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Sahakyan L, Meller T, Evermann U, Schmitt S, Pfarr JK, Sommer J, Kwapil TR, Nenadić I. Anterior vs Posterior Hippocampal Subfields in an Extended Psychosis Phenotype of Multidimensional Schizotypy in a Nonclinical Sample. Schizophr Bull 2020; 47:207-218. [PMID: 32691055 PMCID: PMC8208318 DOI: 10.1093/schbul/sbaa099] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Numerous studies have implicated involvement of the hippocampus in the etiology and expression of schizophrenia-spectrum psychopathology, and reduced hippocampal volume is one of the most robust brain abnormalities reported in schizophrenia. Recent studies indicate that early stages of schizophrenia are specifically characterized by reductions in anterior hippocampal volume; however, studies have not examined hippocampal volume reductions in subclinical schizotypy. The present study was the first to examine the associations of positive, negative, and disorganized schizotypy dimensions with hippocampal subfield volumes in a large sample (n = 195) of nonclinically ascertained young adults, phenotyped using the Multidimensional Schizotypy Scale (MSS). Hippocampal subfields were analyzed from high-resolution 3 Tesla structural magnetic resonance imaging scans testing anatomical models, including anterior vs posterior regions and the cornu ammonis (CA), dentate gyrus (DG), and subiculum subfields separately for the left and right hemispheres. We demonstrate differential spatial effects across anterior vs posterior hippocampus segments across different dimensions of the schizotypy risk phenotype. The interaction of negative and disorganized schizotypy robustly predicted left hemisphere volumetric reductions for the anterior and total hippocampus, and anterior CA and DG, and the largest reductions were seen in participants high in negative and disorganized schizotypy. These findings extend previous early psychosis studies and together with behavioral studies of hippocampal-related memory impairments provide the basis for a dimensional neurobiological hippocampal model of schizophrenia risk. Subtle hippocampal subfield volume reductions may be prevalent prior to the onset of detectable prodromal clinical symptoms of psychosis and play a role in the etiology and development of such conditions.
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Affiliation(s)
- Lili Sahakyan
- Department of Psychology and Beckman Institute for Advanced Science and
Technology, University of Illinois, Champaign, IL
| | - Tina Meller
- Cognitive Neuropsychiatry Lab, Department of Psychiatry and Psychotherapy,
Philipps-University Marburg, Marburg, Germany,Center for Mind, Brain, and Behavior (CMBB), Marburg, Germany
| | - Ulrika Evermann
- Cognitive Neuropsychiatry Lab, Department of Psychiatry and Psychotherapy,
Philipps-University Marburg, Marburg, Germany,Center for Mind, Brain, and Behavior (CMBB), Marburg, Germany
| | - Simon Schmitt
- Cognitive Neuropsychiatry Lab, Department of Psychiatry and Psychotherapy,
Philipps-University Marburg, Marburg, Germany,Center for Mind, Brain, and Behavior (CMBB), Marburg, Germany
| | - Julia-Katharina Pfarr
- Cognitive Neuropsychiatry Lab, Department of Psychiatry and Psychotherapy,
Philipps-University Marburg, Marburg, Germany,Center for Mind, Brain, and Behavior (CMBB), Marburg, Germany
| | - Jens Sommer
- Core Facility BrainImaging, School of Medicine, Philipps-University
Marburg, Marburg, Germany
| | - Thomas R Kwapil
- Department of Psychology and Beckman Institute for Advanced Science and
Technology, University of Illinois, Champaign, IL
| | - Igor Nenadić
- Cognitive Neuropsychiatry Lab, Department of Psychiatry and Psychotherapy,
Philipps-University Marburg, Marburg, Germany,Center for Mind, Brain, and Behavior (CMBB), Marburg, Germany,To whom correspondence should be addressed; Department of Psychiatry and
Psychotherapy, Philipps-University Marburg, Rudolf-Bultmann-Str. 8, 35039 Marburg,
Germany; tel: +49-6421-58-65002, fax: +49-6421-58-68939, e-mail:
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