The development of expressive and communicative behavior from early infancy to the onset of single-word utterances.Expressive and communicative actions are orga... » 

The development of expressive and communicative behavior from early infancy to the onset of single-word utterances.Expressive and communicative actions are organized as a complex and cooperative system with other elements of the infant's physiology, behavior and social environments.The author's research is rooted in ethology and dynamic action theory. «