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The Therapy Progress Scale: Evaluating Psychometric Properties in an Outpatient Sample of Clients in Private Practice

Matteo Bugatti,Yixiao Dong,Jesse Owen,Zachary Richardson,Wendy Rasmussen,Douglas Newton

Published 2024 in Measurement and Evaluation in Counseling and Development

ABSTRACT

Abstract Measurement-based care, an evidence-based practice endorsed by the American Psychological Association, is underpinned by routine assessment supporting a data-driven approach to clinical decision making. Nonetheless, there is a need for brief, nonproprietary measures assessing non-symptom-based outcomes. The present study examined the psychometric properties of the Therapy Progress Scale (TPS), a four-item measure assessing clients’ perceived treatment progress in multiple life functioning domains. The sample included 36,420 clients (66% female, 55.5% White, 31.5% Racial/Ethnic Minority) receiving outpatient psychotherapy from a practice-research group of private practitioners. The TPS demonstrated a one-factor solution (χ2 (2) = 362.08, RMSEA = .076, CFI = .999, TLI = .996) with high reliability estimate (coefficient α = .87). Additionally, the factor structure was consistent across client gender and race/ethnicity. There were moderate negative correlations with symptom-based measures (i.e. PHQ-9 and GAD-7). Test-retest correlation was also strong. Implications for research and practice are provided.

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