Date of Award
Master of Science
Common factors, elements of therapy not related to a specific theoretical orientation, are often measured through observer ratings of video-recorded therapy sessions that vary in length. Researchers have shown that judgments based on short interactions—called "thin slices"—are highly predictive of judgments based on longer or the entirety of these interactions. This study investigated the amount of a psychotherapy interaction observers must view to judge psychotherapy constructs—therapeutic alliance, empathy, and treatment expectations—and the semantic dimensions of evaluation, potency, and activity. Subjects included 48 therapists, each observed in a therapy session with a unique client. Observers rated the therapist after viewing either a 1-min, 5-min, 15-min, or full-session video-recorded segment of the treatment session. Results revealed that observers were able to judge therapist qualities reliably after viewing brief interactions, but these ratings based on brief interactions did not predict ratings of longer therapy interactions.
dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.
Lewin, Rivian Kenyan, "How Much of a Therapy Session Must be Viewed to Judge Interpersonal Qualities of the Therapist?" (2019). Electronic Theses and Dissertations. 1968.