1. Targeting dissociation using cognitive behavioural therapy in voice hearers with psychosis and a history of interpersonal trauma: A case series.
- Author
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Varese, Filippo, Douglas, Maggie, Dudley, Robert, Bowe, Samantha, Christodoulides, Thomas, Common, Stephanie, Grace, Tim, Lumley, Victoria, McCartney, Laura, Pace, Sonia, Reeves, Thomas, Morrison, Anthony P., and Turkington, Douglas
- Subjects
HALLUCINATIONS ,ANALYSIS of variance ,DISSOCIATIVE disorders ,PSYCHOSES ,CONVALESCENCE ,BEHAVIOR therapy ,INTERPERSONAL relations ,PSYCHOSOCIAL factors ,REPEATED measures design ,DESCRIPTIVE statistics ,WOUNDS & injuries ,COGNITIVE therapy - Abstract
Objectives: Previous studies have suggested that dissociation might represent an important mechanism in the maintenance of auditory verbal hallucinations (i.e., voices) in people who have a history of traumatic life experiences. This study investigated whether a cognitive behavioural therapy (CBT) intervention for psychosis augmented with techniques specifically targeting dissociative symptoms could improve both dissociation and auditory hallucination severity in a sample of voice hearers with psychosis and a history of interpersonal trauma (e.g., exposure to sexual, physical, and/or emotional abuse). Design: Case series. Methods: A total of 19 service users with psychosis were offered up to 24 therapy sessions over a 6‐month intervention window. Participants were assessed four times over a 12‐month period using measures of dissociation, psychotic symptoms severity, and additional secondary mental‐health and recovery measures. Results: Sixteen participants engaged in the intervention and were included in last‐observation‐carried‐forward analyses. Dropout rates were in line with those of other CBT for psychosis trials (26.3%). Repeated measures ANOVAs revealed large and significant improvements in dissociation (drm = 1.23) and hallucination severity (drm = 1.09) by the end of treatment; treatment gains were maintained 6 months following the end of therapy. Large and statistically significant gains were also observed on measures of post‐traumatic symptoms, delusion severity, emotional distress, and perceived recovery from psychosis. Conclusions: The findings of this case series suggest that the reduction of dissociation represents a valuable and acceptable treatment target for clients with auditory verbal hallucinations and a trauma history. Future clinical trials might benefit from considering targeting dissociative experiences as part of psychological interventions for distressing voices. Practitioner points: Practitioners should consider the role of dissociation when assessing and formulating the difficulties of voice hearers with a history of trauma.Techniques to reduce dissociation can be feasibly integrated within psychological interventions for voices.Voice hearers with histories of trauma can benefit from psychological interventions aimed at reducing dissociation. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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