Wed, Jan 23, 2013 5:00 PM – 6:30 PM CET (Hora Madrid)
This webinar will investigate two related topics: (a) therapist effects, and (b) characteristics and actions of effective therapists. The presentation will be a synthesis of research methods and substantive results. Therapist effects are defined and statistical methods for estimating therapist effects will be presented. Then the research on therapist effects will be reviewed to show that the sizes for therapist effects in clinical trials, in naturalistic settings, and in specialty clinics employing evidence-based treatments are large, in comparison to other psychotherapy effects (e.g., relative treatment effects). Having established that some therapists consistently achieve better outcomes than other therapists, the research on therapist variables is reviewed to identify the actions of effective therapists, which will show that we do not know much about effective therapists, to a large extent because patient and therapist contributions to the process of psychotherapy are rarely disentangled. Two studies that have disaggregated patient and therapist contributions to the total effect are examined to illustrate how multilevel models can be used to identify effective therapist actions.