Psychotherapy credibility ratings: patient predictors of credibility and the relation of credibility to therapy outcome.

Objective: The current investigation examined the relation between credibility ratings for adult psychotherapies and a variety of patient factors as well as the relation between credibility ratings and subsequent symptom change.

Method: A pooled study database that included studies evaluating the efficacy of cognitive and psychodynamic therapies for a variety of disorders was used. For all studies, a three-item credibility scale was administered at session 2.