The Development of Expressive Behavior: Biology-Environment Interactions articulates the aspects of how biology and environment interact in the development of expressive behavior. The book brings together categories in the understanding of expressive behavior and its development. The text delves on issues on the degree and breadth of linkage between states and expressive behaviors; the theoretical and empirical specification of the referent of an expressive behavior; and the methodological choices in studying the phenomenon. Developmental psychologists, ethologists, primatologists, and sociologists will find value in this work.