Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Dissociative and metacognitive factors in hallucination-proneness when controlling for comorbid symptoms
AU - Varese, Filippo
AU - Barkus, Emma
AU - Bentall, Richard P.
PY - 2011/5
Y1 - 2011/5
N2 - INTRODUCTION: Recent studies have linked hallucination-proneness to dysfunctional metacognitive beliefs, dissociation, and disrupted capacity to discriminate between internal and external cognitive events (reality discrimination). This study addressed a number of methodological limitations of previous research by investigating the relationship between hallucination-proneness and the aforementioned variables while controlling for comorbid symptoms.METHOD: A large sample of nonclinical participants was screened on measures of hallucination-proneness, cognitive intrusions, paranoid ideation, metacognitive beliefs, and dispositional mindfulness (including measures of dissociation-like experiences). In addition, a signal detection task was used to investigate reality discrimination in four subgroups of participants selected on the basis of their scores on hallucination-proneness and intrusions.RESULTS: Regression analyses for the self-report data were conducted to investigate the predictors of hallucination-proneness and paranoia when controlling for comorbid symptoms. Also, between-group differences on the behavioural data were tested to determine whether perturbed reality discrimination is specifically associated with hallucination-proneness rather than cognitive intrusions. Results revealed that metacognitive beliefs are more strongly associated with intrusions and paranoia than hallucination-proneness, whereas hallucination-proneness is related to perturbed reality discrimination and dissociation.CONCLUSIONS: These results clarify previous research on metacognitive dysfunction in hallucination-proneness, and highlight the importance of controlling for the covariation among symptoms when investigating the cognitive processes underlying psychotic experiences.
AB - INTRODUCTION: Recent studies have linked hallucination-proneness to dysfunctional metacognitive beliefs, dissociation, and disrupted capacity to discriminate between internal and external cognitive events (reality discrimination). This study addressed a number of methodological limitations of previous research by investigating the relationship between hallucination-proneness and the aforementioned variables while controlling for comorbid symptoms.METHOD: A large sample of nonclinical participants was screened on measures of hallucination-proneness, cognitive intrusions, paranoid ideation, metacognitive beliefs, and dispositional mindfulness (including measures of dissociation-like experiences). In addition, a signal detection task was used to investigate reality discrimination in four subgroups of participants selected on the basis of their scores on hallucination-proneness and intrusions.RESULTS: Regression analyses for the self-report data were conducted to investigate the predictors of hallucination-proneness and paranoia when controlling for comorbid symptoms. Also, between-group differences on the behavioural data were tested to determine whether perturbed reality discrimination is specifically associated with hallucination-proneness rather than cognitive intrusions. Results revealed that metacognitive beliefs are more strongly associated with intrusions and paranoia than hallucination-proneness, whereas hallucination-proneness is related to perturbed reality discrimination and dissociation.CONCLUSIONS: These results clarify previous research on metacognitive dysfunction in hallucination-proneness, and highlight the importance of controlling for the covariation among symptoms when investigating the cognitive processes underlying psychotic experiences.
KW - Adolescent
KW - Adult
KW - Cognition
KW - Comorbidity
KW - Dissociative Disorders
KW - Female
KW - Hallucinations
KW - Humans
KW - Male
KW - Paranoid Disorders
KW - Predictive Value of Tests
KW - Psychiatric Status Rating Scales
KW - Psychometrics
KW - Young Adult
U2 - 10.1080/13546805.2010.495244
DO - 10.1080/13546805.2010.495244
M3 - Journal article
C2 - 20694861
VL - 16
SP - 193
EP - 217
JO - Cognitive Neuropsychiatry
JF - Cognitive Neuropsychiatry
SN - 1464-0619
IS - 3
ER -