Factorial structure of the Therapist Adherence Measure-Revised (TAM-R) within multisystemic therapy
Number of pages
SourceEuropean Journal of Psychological Assessment, 36, 2, (2020), pp. 427-431
Article / Letter to editor
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SW OZ BSI OGG
SW OW RCSW [owi]
European Journal of Psychological Assessment
The Therapist Adherence Measure (TAM-R) is a central assessment within the quality-assurance system of Multisystemic Therapy (MST). Studies into the validity and reliability of the TAM in the US have found varying numbers of latent factors. The current study aimed to reexamine its factor structure using two independent samples of families participating in MST in the Netherlands. The factor structure was explored using an Exploratory Factor Analysis (EFA) in Sample 1 (N = 580). This resulted in a two-factor solution. The factors were labeled "therapist adherence" and "client–therapist alliance". Four cross-loading items were dropped. Reliability of the resulting factors was good. This two-factor model showed good model fit in a subsequent Confirmatory Factor Analysis (CFA) in Sample 2 (N = 723). The current finding of an alliance component corroborates previous studies and fits with the focus of the MST treatment model on creating engagement.
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