When we think of body movements as communicative events, most of us are likely to get rather dramatic in our fantasies. A phrase that comes readily to mind is "body language," and there has even been a book from the popular press with that phrase as its title (Fast, 1970). The topic has everything: the hope of reading the romantic intentions of one's girl-or boyfriend, the adventure of outsmarting a shrewd salesman, the sure thing of predicting the next move of a poker-faced gambler, the suprise of "reading through" the white lies of one's friends, the advantage of knowing what a prospective employer wants to hear.