This volume collects some of the work of F Ivan Nye and that of some of his colleagues, that describes a theory -- which Nye call Choice and Exchange Theory, and its application to various types of family relationships. The theory is an extension and expansion of "Exchange Theory" originated in the late 1950s by psychologists such as Thibaut and Kelley and sociologist George Homans. The result, a mixture of both new and previously published articles, is a succinct description of Choice and Exchange Theory that will be of value to researchers and students in family studies and related disciplines.