The field of network exchange has grown over the last 20 years from a few scattered studies to substantial publications in leading journals. Today network exchange is as advanced as any area of sociology. Willer and his contributors present its most advanced theory, Network Exchange Theory, and, by assembling and supplementing formulations now spread across leading journals, provide scholars with a unique collection. Contributors examine basic issues in theory as well as research. The end product is a well-tested theory which relates social structure to social action under a wide range of conditions, and is proven to be a useful tool for structural analysis at both the micro and macro levels. An important text and guide for researchers and students of social theory, structure, and social psychology.