In typical development, gestures precede and predict language development. This study examines the developmental sequence of expressive communication and relations between specific gestural and language milestones in toddlers with autism spectrum disorder (ASD), who demonstrate marked difficulty with gesture production and language. Communication…

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…

This study, involving 20 normally developing 4-year olds, found no visual sequential recall differences between direct selection and scanning in task performance. However, subjects correctly recalled fewer sequential symbols represented by Blissymbols than by Picsyms, and recalled significantly fewer three-symbol sequences than two-symbol…