One of the more central functions of nonverbal behavior in interpersonal settings is the communication of relational messages (Burgoon, 1980). These messages, which define the nature of the interpersonal relationship between actors, not only provide a framework for interpreting communication exchanges but also guide decisions about subsequent conduct within the relationship. Jirdci. K . Birrgoon ( E d . D., West Virginia University. 1974) is professor of speech communication a t t h e University of Arizona, Tucson. Doiid B. Buller ( M . A . Auburn University, 1980) is a doctoral student in communication a t Michigan State 0 1984 International Communication Assn. 35 1
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