Clients', therapists', and observers' agreement on the amount, temporal location, and content of psychotherapeutic change and its relation to outcome.

Clients', therapists', and observers' identification of change was studied in 27 therapeutic processes, and agreement on the amount, temporal location, and content of change was related to outcome. Results show that clients reported more changes in successful therapies. Client-therapist temporal match of change moments was low irrespective of outcome. Results from all three perspectives were consistent in that manifestation of new behaviors and emotions was the most representative content of change among all therapies. Meanwhile, client-therapist agreement on the frequency of grouped change indicators reported was associated with positive outcome, whereas client-observer agreement was related to negative outcome. Therapists and observers agreed in both successful and nonsuccessful therapies. The relationship between agreement and therapeutic outcome is discussed in relation to each dimension of analysis.