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Dissertation
Acceptance and commitment therapy for psychiatric inpatients with psychotic symptoms
Doctor of Philosophy (Ph.D.), Drexel University
Apr 2004
DOI:
https://doi.org/10.17918/etd-295
Abstract
Cognitive behavior therapy has been demonstrated in a number of randomized controlled trials to be efficacious for the treatment of psychosis. Emerging evidence suggests the usefulness of related mindfulness/acceptance-based approaches for this population. The current study was designed to replicate and extend previous findings by Bach and Hayes (2002). Psychiatric inpatients with psychotic symptoms were randomly assigned to enhanced treatment as usual or enhanced treatment as usual plus individual sessions of Acceptance and Commitment Therapy (ACT). Results revealed greater improvements in the ACT group at post-treatment on clinician-rated affective symptoms and global improvement, and self-rated distress associated with hallucinations and impairment in social functioning. Overall large effect size improvements were demonstrated in both groups pre- to post-treatment, with medium effect sizes differences between groups favoring the ACT condition. In addition, significantly more participants in the ACT condition reached clinically significant improvements in overall symptoms at posttreatment. At 4-month follow-up, 45% of participants in the ETAU only group had been rehospitalized compared to only 28% of those in the ACT group. Results suggested that believability in hallucinations mediated the relationship between symptom frequency and distress. Improvement in believability of hallucinations over time was only observed in the ACT condition, and change in believability predicted change in associated distress after controlling for change in frequency of hallucinations. Results are viewed as largely consistent with the findings of Bach and Hayes and warrant future investigations with larger samples. Future research should continue to investigate possible mechanisms of action in effective psychosocial treatments for psychosis.
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Details
- Title
- Acceptance and commitment therapy for psychiatric inpatients with psychotic symptoms
- Creators
- Brandon A. Gaudiano - DU
- Contributors
- James D. Herbert (Advisor) - Drexel University (1970-)
- Awarding Institution
- Drexel University
- Degree Awarded
- Doctor of Philosophy (Ph.D.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Resource Type
- Dissertation
- Language
- English
- Academic Unit
- Psychological and Brain Sciences (Psychology); College of Arts and Sciences; Drexel University
- Other Identifier
- 295; 991014632305504721