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- Title
Measuring Adherence in CBT for Psychosis: A Psychometric Analysis of an Adherence Scale.
- Authors
Rebecca Rollinson; Ben Smith; Craig Steel; Suzanne Jolley; Juliana Onwumere; Philippa A. Garety; Elizabeth Kuipers; Daniel Freeman; Paul E. Bebbington; Graham Dunn; Mike Startup; David Fowler
- Abstract
AbstractThis paper reports the psychometric properties of a CBT for psychosis adherence scale, the Revised Cognitive Therapy for Psychosis Adherence Scale (R-CTPAS). The scale's factor structure, inter-rater reliability and concurrent validity were analysed in a sample of 67 audiotaped sessions of CBT for psychosis. The concurrent validity of the scale was examined through comparison with the Cognitive Therapy Scale (CTS, Young and Beck, 1980). Principal components analysis of the trial data suggested three factors: ?engagement/assessment work?, ?relapse prevention work? and ?formulation/schema work?. Satisfactory levels of inter-rater reliability were established between rater dyads. Moderate correlations with the CTS provided an indication of concurrent validity. The R-CTPAS is concluded to be a reliable and useful instrument that can assess adherence to CBT for psychosis using the Fowler, Garety and Kuipers (1995) therapy model.
- Subjects
PSYCHOMETRICS; COGNITIVE therapy; PSYCHOSES; PSYCHOLOGICAL tests; PSYCHOTHERAPY
- Publication
Behavioural & Cognitive Psychotherapy, 2008, Vol 36, Issue 2, p163
- ISSN
1352-4658
- Publication type
Article
- DOI
10.1017/S1352465807003980