Bjaastad Jon Fauskanger, Haugland Bente Storm Mowatt, Fjermestad Krister W, Torsheim Torbjørn, Havik Odd E, Heiervang Einar R, Öst Lars-Göran
Regional Centre for Child and Youth Mental Health and Child Welfare, Uni Research Health.
Frambu Resource Centre for Rare Disorders.
Psychol Assess. 2016 Aug;28(8):908-16. doi: 10.1037/pas0000230. Epub 2015 Oct 12.
The aim of the present study was to evaluate the psychometric properties of the Competence and Adherence Scale for Cognitive Behavioral Therapy (CAS-CBT). The CAS-CBT is an 11-item scale developed to measure adherence and competence in cognitive-behavioral therapy (CBT) for anxiety disorders in youth. A total of 181 videotapes from the treatment sessions in a randomized controlled effectiveness trial (Wergeland et al., 2014) comprising youth (N = 182, M age = 11.5 years, SD = 2.1, range 8-15 years, 53% girls, 90.7% Caucasian) with mixed anxiety disorders were assessed with the CAS-CBT to investigate interitem correlations, internal consistency, and factor structure. Internal consistency was good (Cronbach's alpha = .87). Factor analysis suggested a 2-factor solution with Factor 1 representing CBT structure and session goals (explaining 46.9% of the variance) and Factor 2 representing process and relational skills (explaining 19.7% of the variance). The sum-score for adherence and competence was strongly intercorrelated, r = .79, p < .001. Novice raters (graduate psychology students) obtained satisfactory accuracy (ICC > .40, n = 10 videotapes) and also good to excellent interrater reliability when compared to expert raters (ICC = .83 for adherence and .64 for competence, n = 26 videotapes). High rater stability was also found (n = 15 videotapes). The findings suggest that the CAS-CBT is a reliable measure of adherence and competence in manualized CBT for anxiety disorders in youth. Further research is needed to investigate the validity of the scale and psychometric properties when used with other treatment programs, disorders and treatment formats. (PsycINFO Database Record
本研究的目的是评估认知行为疗法能力与依从性量表（CAS-CBT）的心理测量特性。CAS-CBT是一个由11个项目组成的量表，旨在测量青少年焦虑症认知行为疗法（CBT）中的依从性和能力。在一项随机对照有效性试验（Wergeland等人，2014年）中，共有181段来自治疗 session 的录像带，该试验纳入了患有混合焦虑症的青少年（N = 182，平均年龄 = 11.5岁，标准差 = 2.1，年龄范围8 - 15岁，53%为女孩，90.7%为白种人），使用CAS-CBT对其进行评估，以研究项目间相关性、内部一致性和因子结构。内部一致性良好（克朗巴哈系数 = 0.87）。因子分析表明存在一个双因子解决方案，因子1代表CBT结构和 session 目标（解释了46.9%的方差），因子2代表过程和关系技能（解释了19.7%的方差）。依从性和能力的总分之间存在强相关性，r = 0.79，p < 0.001。新手评分者（心理学研究生）获得了令人满意的准确性（组内相关系数 > 0.40，n = 10段录像带），与专家评分者相比，评分者间信度也良好到优秀（依从性的组内相关系数 = 0.83，能力的组内相关系数 = 0.64，n = 26段录像带）。还发现了较高的评分者稳定性（n = 15段录像带）。研究结果表明，CAS-CBT是青少年焦虑症手册化CBT中依从性和能力的可靠测量工具。需要进一步研究来调查该量表在与其他治疗项目、疾病和治疗形式一起使用时的效度和心理测量特性。（PsycINFO数据库记录
