Therapist effects: facilitative interpersonal skills as a predictor of therapist success

TLDR

The study examined sources of therapist effects in a sample of 25 therapists who saw 1,141 clients at a university counseling center. Therapists’ facilitative interpersonal skills were measured with a performance task rating responses to video simulations, while clients completed the OQ‑45 at each session, and therapists also completed the Social Skills Inventory and provided demographic data, with all data analyzed using multilevel modeling. Only therapists’ facilitative interpersonal skills explained variance in client outcomes, whereas age was the sole demographic predictor of therapist effects, indicating that handling interpersonally challenging encounters accounts for a portion of outcome variability. © 2009 Wiley Periodicals, Inc., J Clin Psychol 65:1–14.

Abstract

Abstract This study examined sources of therapist effects in a sample of 25 therapists who saw 1,141 clients at a university counseling center. Clients completed the Outcome Questionnaire‐45 (OQ‐45) at each session. Therapists' facilitative interpersonal skills (FIS) were assessed with a performance task that measures therapists' interpersonal skills by rating therapist responses to video simulations of challenging client–therapist interactions. Therapists completed the Social Skills Inventory (SSI) and therapist demographic data (e.g., age, theoretical orientation) were available. To test for the presence of therapist effects and to examine the source(s) of these effects, data were analyzed with multilevel modeling. Of demographic predictor variables, only age accounted for therapist effects. The analysis with age, FIS, and SSI as predictors indicated that only FIS accounted for variance in outcomes suggesting that a portion of the variance in outcome between therapists is due to their ability to handle interpersonally challenging encounters with clients. © 2009 Wiley Periodicals, Inc. J Clin Psychol 65:1–14, 2009.