This study examined how change occurs in infant gestural communication. Five infants were videotaped once a week from 10 to 12 months and twice a week from 12 to 15 months during play sessions with their mothers in a laboratory playroom. These sessions consisted of 10 minutes of a structured play context in which infants were seated at a table at…

Applies a systems approach to the development of expressive and communicative action of infants in the first year of life. Hypothesizes that the systems approach (which integrates expressive and communicative actions with other elements of the infant's physiology, cognition, behavior, and social environment) will explain previously unexplained…