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- PMID: 22257130
- UKPMCID: 22257130
- DOI: 10.3109/09638237.2011.621470
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Assessing fidelity to integrated motivational interviewing and CBT therapy for psychosis and substance use: the MI-CBT fidelity scale (MI-CTS).
Haddock, Gillian; Beardmore, Ruth; Earnshaw, Paul; Fitzsimmons, Mike; Nothard, Sarah; Butler, Rebecca; Eisner, Emily; Barrowclough, Christine
Journal of mental health (Abingdon, England). 2012;21(1):38-48.
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Full-text held externally
- PMID: 22257130
- UKPMCID: 22257130
- DOI: 10.3109/09638237.2011.621470
Abstract
Background Guidelines for the psychological treatment of psychosis and substance use suggest integrated treatments to address both problems are necessary. One such treatment combines cognitive-behaviour therapy (CBT) and motivational interviewing (MI). While there are a number of scales to assess treatment fidelity to CBT and MI separately, none, to date, assess fidelity to integrated MI and CBT (MI-CBT) for psychosis and substance use. Aims This study aimed to develop a reliable and valid scale to assess fidelity to MI-CBT for people with psychosis and problematic substance use. Method Items for a new scale (the MI-CTS fidelity scale) were selected from multiple relevant sources. Inter-rater reliability and validity (against the CTS-Psy and Motivational Interviewing Treatment Integrity (MITI)) scales were investigated. Results The scale had good inter-rater reliability when used to rate adherence versus non-adherence. In relation to validity, the scale related well to CBT and MI scales (the CTS-Psy and MITI). Conclusions The MI-CTS is useful for assessing adherence to integrated MI-CBT for psychosis and substance misuse and could aid training and implementation of the approach.