“…Little research has examined the nonverbal cues that correspond to increases in such arousal. However, if nonverbal indicators of intimacy, attraction, liking, and similarity can be taken as possible signals of attraction-based arousal, then positively valenced arousal should be evidenced by increased involvement and affiliation cues, such as more gaze time, forward lean, close proximity, smiling, touch, postural attentiveness, gestural animation, vocal animation, faster tempo, shorter pauses and response latencies, and vocal warmth (Burgoon, Buller, Hale, & deTurck, 1984;Byrne, Ervin, & Lamberth, 1970;Coker & Burgoon, 1987;Scherer & Schiff, 1973;Siegman, 1978Siegman, , 1979. High social arousal may also be accompanied by natural laughter, which may serve as an arousal release mechanism (Chapman, 1975).…”