A Randomized Trial to Identify Accurate Measurement Methods for Adherence to Cognitive-Behavioral Therapy

Clinician fidelity to cognitive behavioral therapy (CBT) is an important mechanism by which desired clinical out-comes are achieved and is an indicator of care quality. Despite its importance, there are few fidelity measurement methods that are efficient and have demonstrated reliability and validity. Using a randomized trial design, we com-pared three methods of assessing CBT adherence-a core component of fidelity-to direct observation, the gold standard. Clinicians recruited from 27 community mental health agencies (n = 126; M age = 37.69 years, SD = 12.84; 75.7% female) were randomized 1:1:1 to one of three fidelity conditions: self-report (n = 41), chart -stimulated recall (semistructured interviews with the chart available; n = 42), or behavioral rehearsal (simulated role-plays; n = 43). All participating clinicians completed fidelity assessments for up to three sessions with three different clients that were recruited from clinicians' caseloads (n = 288; M age = 13.39 years SD = 3.89; 41.7% female); sessions were also audio-recorded and coded for comparison to determine the most accurate method. All fidelity measures had parallel scales that yielded an adherence maximum score (i.e., the highest-rated intervention in a session), a mean of techniques observed, and a count total of observed techniques. Results of three-level mixed effects regression models indicated that behavioral rehearsal produced comparable scores to observation for all adherence scores (all ps > .01), indicating no difference between behavioral rehearsal and observation. Self-report and chart-stimulated recall overestimated adherence compared to observation (ps < .01). Overall, findings suggested that behavioral rehearsal indexed CBT adherence comparably to direct observation, the gold-standard, in pediatric populations. Behavioral rehearsal may at times be able to replace the need for resource-intensive direct observation in implementation research and practice.