This quantitative study investigated the effect of client self-disclosure on the physiological arousal of the therapist and subsequent ratings of the therapeutic alliance, session smoothness, and session depth. Three therapists and 10 clients participated in a 40-minute videotaped therapy session while being attached to sensors that measured heart rate and skin conductance. The participants completed self-report questionnaires designed to assess the therapeutic alliance and session smoothness and depth immediately following the therapy session. The videotaped therapy sessions were later transcribed and coded by two independent coders for the occurrence of client self-disclosure. Correlation analyses were utilized to determine whether or not a relationship existed between client self-disclosure and the physiological arousal of the therapist. No significant relationships were found to exist between client self-disclosure and the physiological arousal of the therapist. Positive correlations were found to exist between the occurrence of client self-disclosure and the physiological arousal of the therapist as well as between the occurrence of client self-disclosure and the therapeutic alliance. The physiological arousal of the therapist was also found to be positively correlated with the strength of the therapeutic alliance.

Much research has studied cohesiveness within client groups in terms of making therapeutic gains. These studies have defined cohesiveness in terms of a) attraction of the group as perceived by a group member, b) how clearly each member sees his/her role within the group, and c) the effectiveness of one's skills in attaining group goals. Little research has dealt with the role of staff cohesiveness in developing an effective treatment program. Effectiveness, in this study, is defined as the degree to which clients are willing to disclose personal information to the staff. The results show a positive correlation between staff's perceived effectiveness with clients and the clients' willingness to self-disclose. On-hand experience with clients seems important in involving clients in therapy.