Theory of Mind and attachment styles in people with psychotic disorders, their siblings, and controls

OBJECTIVE

Impaired Theory of Mind (ToM) and insecure (adult) attachment styles have been found in persons with schizophrenia as well as in their healthy siblings. ToM refers to the ability to infer mental states of self and others including beliefs and emotions. Insecure attachment is proposed to underlie impaired ToM, and comprises avoidant (discomfort with close relationships, high value of autonomy) and anxious (separation anxiety, dependency on others) attachment. Insight into the association between attachment style and ToM is clinically relevant, as it enhances our understanding and clinical approach to social dysfunction in schizophrenia. Therefore, we studied the association between insecure attachment styles and ToM in patients with schizophrenia, their siblings, and healthy controls.

METHODS

A total of 111 patients with a diagnosis in the schizophrenia spectrum, 106 non-affected siblings and 63 controls completed the Psychosis Attachment Measure, the Conflicting Beliefs and Emotions, a subsection of the Wechsler Adult Intelligence Scale, and the Childhood Trauma Questionnaire-Short Form. Severity of symptoms was assessed with the Community Assessment of Psychic Experiences and the Positive and Negative Syndrome Scale.

RESULTS

After controlling for sex, intelligence, history of trauma and symptom severity, avoidant attachment was significantly associated with cognitive as well as with affective ToM, showing U-shaped associations, indicating better ToM performance for patients with lower or higher levels of avoidant attachment compared to medium levels. Anxious attachment in patients was associated with more problems in cognitive ToM.

CONCLUSION

The results from this study support the idea that an anxious attachment style is associated with worse ToM performance in patients. Results also suggested a potential protective role of higher levels of avoidant attachment on ToM. These findings bear clinical relevance, as activation of (insecure) attachment mechanisms may affect interpersonal relations, as well as therapeutic working alliance. Further clarification is needed, especially on associations between ToM and avoidant attachment.

Psychometric properties of the self-report version of the Quick Inventory of Depressive Symptoms (QIDS-SR₁₆) questionnaire in patients with schizophrenia

BACKGROUND

Self-report instruments for the assessment of depressive symptoms in patients with psychotic disorders are scarce. The Quick Inventory of Depressive Symptoms (QIDS-SR16) may be a useful self-report instrument, but has received little attention in this field. This paper aimed to test the psychometric properties of the QIDS-SR16 questionnaire in patients with a psychotic disorder.

METHODS

Patients diagnosed with a psychotic disorder from health care institutions in The Netherlands were included in the study. Depressive symptoms were assessed with the QIDS-SR16 and the Calgary Depression Scale for Schizophrenia (CDSS). Psychotic symptoms were assessed with the Positive and Negative Syndrome Scale (PANSS) and extrapyramidal symptoms (EPS) with three EPS rating scales. Spearman's correlation coefficients were used to compare the total score of the QIDS-SR16 with the total scores of the CDSS, PANSS-subscales and EPS rating scales.

RESULTS

In a sample of 621 patients with psychotic disorders, the QIDS-SR16 showed good internal consistency (α = 0.87). The QIDS-SR16 correlated moderately with the CDSS (r = 0.44) and the PANSS subscale for emotional distress (r = 0.47). The QIDS-SR16 showed weak correlation with the PANSS subscale for negative symptoms (r = 0.28) and minimal correlation with EPS rating scales (r = 0.09-0.16).

CONCLUSIONS

The QIDS-SR16 may reliably assess depressive symptoms in patients with psychotic disorders, but its concurrent validity with the CDSS was rather poor in this population. We would recommend developing a new self-report questionnaire for the assessment of depressive symptoms in patients with psychotic disorders.

From phenomenology to neurophysiological understanding of hallucinations in children and adolescents

Typically reported as vivid, multisensory experiences which may spontaneously resolve, hallucinations are present at high rates during childhood. The risk of associated psychopathology is a major cause of concern. On the one hand, the risk of developing further delusional ideation has been shown to be reduced by better theory of mind skills. On the other hand, ideas of reference, passivity phenomena, and misidentification syndrome have been shown to increase the risk of self-injury or heteroaggressive behaviors. Cognitive psychology and brain-imaging studies have advanced our knowledge of the mechanisms underlying these early-onset hallucinations. Notably, specific functional impairments have been associated with certain phenomenological characteristics of hallucinations in youths, including intrusiveness and the sense of reality. In this review, we provide an update of associated epidemiological and phenomenological factors (including sociocultural context, social adversity, and genetics, considered in relation to the psychosis continuum hypothesis), cognitive models, and neurophysiological findings concerning hallucinations in children and adolescents. Key issues that have interfered with progress are considered and recommendations for future studies are provided.

Mindfulness training in a heterogeneous psychiatric sample: outcome evaluation and comparison of different diagnostic groups

OBJECTIVES

To examine outcome after mindfulness training in a heterogeneous psychiatric outpatient population and to compare outcome in different diagnostic groups.

METHOD

One hundred and forty-three patients in 5 diagnostic categories completed questionnaires about psychological symptoms, quality of life, and mindfulness skills prior to and immediately after treatment.

RESULTS

The mixed patient group as a whole improved significantly on all outcome measures. Differential improvement was found for different diagnostic categories with respect to psychological symptoms and quality of life: Bipolar patients did not improve significantly on these measures. This finding could be explained by longer illness duration and lower baseline severity in the bipolar category.

CONCLUSION

Mindfulness training is associated with overall improvement in a heterogeneous outpatient population. Differences in outcome between diagnostic categories may be ascribed to differences in illness duration and baseline severity.

Auditory hallucinations in childhood: associations with adversity and delusional ideation

BACKGROUND

Previous work suggests that exposure to childhood adversity is associated with the combination of delusions and hallucinations. In the present study, associations between (severity of) auditory vocal hallucinations (AVH) and (i) social adversity [traumatic experiences (TE) and stressful events (SE)] and (ii) delusional ideation were examined.

METHOD

A baseline case-control sample of children with and without AVH were re-assessed on AVH after 5 years and interviewed about the experience of social adversity and delusions.

RESULTS

A total of 337 children (mean age 13.1 years, S.D.=0.5) were assessed: 40 children continued to hear voices that were present at baseline (24%, persistent group), 15 heard voices only at follow-up (9%, incident group), 130 children no longer reported AVH that were present at baseline (remitted group) and 152 never heard voices (referent group). Both TE and SE were associated with both incident and persistent AVH, as well as with greater AVH severity and delusional ideation at follow-up. In addition, the combination of AVH and delusions displayed a stronger association with TE and SE compared with either AVH or delusions alone.

CONCLUSIONS

Early childhood AVH are mostly benign and transitory. However, experience of social adversity is associated with persistence, severity and onset of new AVH closer to puberty, and with delusional ideation.

Course of auditory vocal hallucinations in childhood: 5-year follow-up study

BACKGROUND

In a baseline study among 7- and 8-year-old children with auditory vocal hallucinations, only limited functional impact was observed.

AIMS

To assess 5-year course and predictors of auditory vocal hallucinations, as well as 5-year incidence and its risk factors.

METHOD

A sample of 337 children, 12 and 13 years of age, were reassessed on auditory vocal hallucinations and associated symptoms after a mean follow-up period of 5.1 years.

RESULTS

The 5-year persistence and incidence rates were 24% and 9% respectively, with more new cases arising in urban areas.Both persistent and incident auditory vocal hallucinations were associated with problem behaviour in the clinical range of psychopathology as measured with the Child Behavior Checklist, particularly at follow-up, as well as with other psychotic symptoms, particularly at baseline. Persistence was predicted by baseline auditory vocal hallucinations severity,particularly in terms of external attribution of voices and hearing multiple voices, and was associated with worse primary school test scores and lower secondary school level.

CONCLUSIONS

First onset of auditory vocal hallucinations in middle childhood is not uncommon and is associated with psychopathological and behavioural comorbidity. Similarly,persistence of auditory vocal hallucinations in childhood is not uncommon and is associated with psychopathological,behavioural and cognitive alterations.

Better theory-of-mind skills in children hearing voices mitigate the risk of secondary delusion formation

OBJECTIVE

To examine the social cognitive vulnerabilities mediating delusion formation in children presenting with hallucinatory experiences.

METHOD

A sample of 259 12- and 13-year-old children, from a baseline case-control sample of children with and without auditory hallucinations (AH), were re-assessed after 5 years for presence of AH. Presence of delusions and theory of mind (ToM) were also assessed, to examine the hypothesized moderating role of ToM in delusion formation in children hearing voices.

RESULTS

In children with AH at age 7-8 and/or 12-13 years, the risk of delusion formation was significantly higher (P interaction = 0.027) in those with lower ToM skills (OR = 4.3, 95% CI 1.9-9.9, P = 0.000), compared to those with higher ToM skills (OR 1.6, 95% CI 0.7-3.7, P = 0.26), independently from secondary school level.

CONCLUSION

The results suggest that better mentalizing abilities confer protection against delusion formation in children experiencing perceptual anomalies, not reducible to general cognitive ability.

Prevalence and correlates of auditory vocal hallucinations in middle childhood

BACKGROUND

Hearing voices occurs in middle childhood, but little is known about prevalence, aetiology and immediate consequences.

AIMS

To investigate prevalence, developmental risk factors and behavioural correlates of auditory vocal hallucinations in 7- and 8-year-olds.

METHOD

Auditory vocal hallucinations were assessed with the Auditory Vocal Hallucination Rating Scale in 3870 children. Prospectively recorded data on pre- and perinatal complications, early development and current problem behaviour were analysed in children with auditory vocal hallucinations and matched controls.

RESULTS

The 1-year prevalence of auditory vocal hallucinations was 9%, with substantial suffering and problem behaviour reported in 15% of those affected. Prevalence was higher in rural areas but auditory vocal hallucinations were more severe and had greater functional impact in the urban environment. There was little evidence for associations with developmental variables.

CONCLUSIONS

Auditory vocal hallucinations in 7- and 8-year-olds are prevalent but mostly of limited functional impact. Nevertheless, there may be continuity with more severe psychotic outcomes given the serious suffering in a subgroup of children and there is evidence for a poorer prognosis in an urban environment.