In this naturalistic study, 262 audiotaped psychotherapy sessions-randomly drawn from 81 individual therapies from eight different psychotherapy approaches-were rated completely on treatment ...adherence using a newly developed rating manual. In the therapy sessions, a relatively low percentage of treatment specific interventions (ranging from 4.2% to 27.8%) was found for all eight approaches, 50% to 73% of the interventions were nonspecific or common, and approximately 18% to 27% were intervention techniques from other approaches. Different types of psychotherapy differed highly significantly in levels of treatment adherence. There was no statistically significant association between the type of psychotherapy and its outcome, or between the degree of therapists' treatment fidelity and the treatment outcome. However, there were significant associations between therapists' degree of professional experience, clients' initial psychological burden, and treatment response. Clients' severity of psychological problems prior to treatment predicted quality of therapeutic alliance while therapists' treatment adherence was predicted by therapists' professional experience and by the quality of the therapeutic alliance. We discuss the seemingly indirect importance of treatment adherence for psychotherapy outcome that we found in this study in relation to findings from other studies and in the context of the role of schools within psychotherapy.
Objective: This paper addresses the results of two samples of a large naturalistic (effectiveness study) outpatient process-outcome study in Switzerland (Practice-Oriented Outpatient Psychotherapy ...Study). Ten different types of psychotherapy were investigated by looking at the role of the sex or gender of therapists and patients with regard to treatment outcome by including several nonspecific therapeutic factors. Method: Ten different types of psychotherapy, 237 patients, and 68 therapists were included in the study. A subsample of 116 cases was analyzed with regard to therapists' technical interventions. Results: Sex and gender issues of both therapists and patients did not play a crucial role in any type of psychotherapy investigated. Gender issues appeared to play an indirect role. Female therapists intervene more empathically, whereas male therapists tend to use more confrontational techniques. Conclusions: Since the results show that therapists differ substantially with regard to their intervention techniques due to their sex, they should become more conscious of their interventions by considering patients' severity of psychological problems and patients' level of psychological functioning so as to not over or underchallenge them.
