ChikaNAGAOKA•õa), Nonmember and Masashi KOMORI•õ•õb), Member SUMMARY Body movement synchrony (i.e. rhythmic synchronization between the body movements of interacting partners) has been described by subjective impressions of skilled counselors and has been considered to reflect the depth of the client-counselor relationship. This study analyzed temporal changes in body movement synchrony through a video analysis of client-counselor dialogues in counseling sessions. Four 50-minute psychotherapeutic counseling sessions were analyzed, including two negatively evaluated sessions (low evaluation groups) and two positively evaluated sessions (high evaluation groups). In addition, two 50-minute ordinary advice sessions between two high school teachers and the clients in the high rating group were analyzed. All sessions represent role-playing. The intensity of the participants' body movement was measured using a video-based system. Temporal change of body movement synchrony was analyzed using moving correlations of the intensity between the two time series. The results revealed (1) A consistent temporal pattern among the four counseling cases, though the moving correlation coefficients were higher for the high evaluation group than the low evaluation group and (2) Different temporal patterns for the counseling and advice sessions even when the clients were the same. These results were discussed from the perspective of the quality of client-counselor relationship. key words: body movement synchrony, counseling, advice session, videobased analysis, client-counselor relationship

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The relationship between body movements of clients and counselors in psychotherapeutic counseling: A study using the video-based quantification method Masashi KOMORI (Osaka Electro-Communication University) Chika NAGAOKA (Kyoto University, JSPS)The present study analyzed the relationship between body movements of clients and counselors, based on a video analysis of client῍counselor dialogues in initial counseling sessions. Four 50-minute psychotherapeutic counseling sessions were analyzed, of which two were negatively evaluated (low evaluation group) and two were positively evaluated (high evaluation group). In addition, two 50-minute ordinary advice sessions between two high school teachers and the clients from the high evaluation group were analyzed. All sessions represented role-playing. The intensity of participants' body movement was measured using a video-based analysis. The temporal relationship between body movements of clients and counselors/teachers was analyzed using a moving crosscorrelation with time lags between the two time series of body movement intensity. The results revealed: (1) a tendency of the counselors' body movements to occur with a 0.5-second delay as compared to those of the clients all across the 50-minute sessions; (2) this tendency was particularly notable in the case of the highly evaluated sessions; (3) this tendency was not observed in the advise sessions, the two sessions displaying inconsistent patterns.

The present study investigated the receptiveness of speakers toward conversational partners in dialogues by comparing duration of response latencies in both Compromise and Debate conditions. 12 dyads of speakers holding opposing opinions participated in a 15-min. dialogue. Six dyads in the Compromise condition reached a conclusion through discussion and consideration of the partner's opinion. The six dyads in the Debate condition imposed their opinion on the conversational partner. Analysis indicated that in compromise dialogues, the response latencies of the conversational partners become similar over the time course, while in debate diaogues, the response latency does not become similar, suggesting that speakers having a receptive attitude adjust their response latencies to match the partner's. The role of congruence of response latencies in dyadic communication was discussed.