Abstract: | SUMMARY There is a paucity of research on children's awareness of how emotion communication varies within relationships. Indeed, we operate on the assumption that a very significant function of emotion is to regulate interpersonal interaction. In this essay we discuss how children come to understand such phenomena as: (a) emotional-expressive behavior can have powerful interpersonal consequences; (b) relationship dimensions such as degree of power and closeness interact with intensity of emotion in how emotion is communicated; and (c) maintenance of relationship quality (e.g., equilibrium, attenuation, or deepening) requires different strategies of emotion communication. Among the constructs that we address are several that are useful for understanding the dynamics of interpersonal communication; they have also proven their utility over a considerable period of time. However, these constructs derive from social psychology and family systems; they have not been systematically investigated from a developmental perspective |