Dissociation mediates the relationship between childhood trauma and hallucination-proneness

Varese, F. and Barkus, E. and Bentall, R. P. (2012) Dissociation mediates the relationship between childhood trauma and hallucination-proneness. Psychological Medicine, 42 (5). pp. 1025-1036. ISSN 0033-2917

Full text not available from this repository.


Background. It has been proposed that the relationship between childhood trauma and hallucinations can be explained by dissociative processes. The present study examined whether the effect of childhood trauma on hallucination-proneness is mediated by dissociative tendencies. In addition, the influence of dissociative symptoms on a cognitive process believed to underlie hallucinatory experiences (i.e. reality discrimination; the capacity to discriminate between internal and external cognitive events) was also investigated. Method. Patients with schizophrenia spectrum disorders (n=45) and healthy controls (with no history of hallucinations; n=20) completed questionnaire measures of hallucination-proneness, dissociative tendencies and childhood trauma, as well as performing an auditory signal detection task. Results. Compared to both healthy and non-hallucinating clinical controls, hallucinating patients reported both significantly higher dissociative tendencies and childhood sexual abuse. Dissociation positively mediated the effect of childhood trauma on hallucination-proneness. This mediational role was particularly robust for sexual abuse over other types of trauma. Signal detection abnormalities were evident in hallucinating patients and patients with a history of hallucinations, but were not associated with pathological dissociative symptoms. Conclusions. These results are consistent with dissociative accounts of the trauma-hallucinations link. Dissociation, however, does not affect reality discrimination. Future research should examine whether other cognitive processes associated with both dissociative states and hallucinations (e. g. deficits in cognitive inhibition) may explain the relationship between dissociation and hallucinatory experiences.

Item Type:
Journal Article
Journal or Publication Title:
Psychological Medicine
Uncontrolled Keywords:
?? dissociationhallucinationspsychosissignal detectiontraumaauditory verbal hallucinationsnegative syndrome scalepsychotic symptomsthought-disordercommunity samplehearing voicesschizophreniaexperiencesabusereliabilitypsychiatry and mental healthapplied psych ??
ID Code:
Deposited By:
Deposited On:
29 Oct 2014 16:39
Last Modified:
28 Nov 2023 11:20