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Development and Psychometric Evaluation of the Assessment of Core CBT Skills (ACCS): An Observation Based Tool for Assessing Cognitive Behavioural Therapy Competence

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Muse, Kate ORCID: https://orcid.org/0000-0001-5824-1841, McManus, F., Rakovshik, S. and Thwaites, R. (2016) Development and Psychometric Evaluation of the Assessment of Core CBT Skills (ACCS): An Observation Based Tool for Assessing Cognitive Behavioural Therapy Competence. Psychological Assessment, 29 (5). pp. 542-555. ISSN Print: 1040-3590 Online: 1939-134X

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Official URL: https://www.ncbi.nlm.nih.gov/pubmed/27668487

Abstract

This paper outlines the development and psychometric evaluation of the Assessment of Core CBT Skills (ACCS) rating scale. The ACCS aims to provide a novel assessment framework to deliver formative and summative feedback regarding therapists’ performance within observed cognitive-behavioural treatment sessions, and for therapists to rate and reflect on their own performance. Findings from three studies are outlined: 1) a feedback study (N = 66) examining content validity, face validity and usability, 2) a focus group (N = 9) evaluating usability and utility, and 3) an evaluation of the psychometric properties of the ACCS in ‘real world’ CBT training and routine clinical practice contexts. Results suggest that the ACCS has good face validity, content validity, and usability and provides a user-friendly tool that is useful for promoting self-reflection and providing formative feedback. Scores on both the self and assessor-rated versions of the ACCS demonstrate good internal consistency, inter-rater reliability, and discriminant validity. In addition, ACCS scores were found to be correlated with, but distinct from the Revised Cognitive Therapy Scale (CTS-R) and were comparable to CTS-R scores in terms of internal consistency and discriminant validity. Additionally, the ACCS may have advantages over the CTS-R in terms of inter-rater reliability of scores. The studies also provided insight into areas for refinement and a number of modifications were undertaken to improve the scale. In summary, the ACCS is an appropriate and useful measure of CBT competence that can be used to promote self-reflection and provide therapists with formative and summative feedback.

Item Type:	Article
Additional Information:	This article may not exactly replicate the final version published in the APA journal. It is not the copy of record. The full-text of the published version can be accessed via the http://dx.doi.org/10.1037/pas0000372, subject to the terms and conditions of the publisher. Staff and students at the University of Worcester can access the full-text of the online published article via the online Library Search. External users should check availability with their local library or Interlibrary Requests Service.
Uncontrolled Discrete Keywords:	competence, skill, assessment, training, cognitive-behavioural, CBT
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Divisions:	College of Business, Psychology and Sport > School of Psychology
Related URLs:	http://www.apa.org/pubs/journals/pas/
Depositing User:	Janet Davidson
Date Deposited:	18 Nov 2016 11:19
Last Modified:	14 Jul 2020 11:21
URI:	https://eprints.worc.ac.uk/id/eprint/5099

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