Body language and facial gesture provide sufficient visual information to support high-level social inferences from "thin slices" of behavior. Given short movies of nonverbal behavior, adults make reliable judgments in a large number of tasks. Here we find that the high precision of adults' nonverbal social perception depends on the slow…

Preschool children in a free-play situation experienced one of two training sequences: saying then doing, or doing then saying. The effect of training on the development of a correspondence between children's verbal and nonverbal behaviors was examined. The say-do sequence produced higher levels of correspondence. (ST)