What are key causes and effects of structural inequality across many social, economic, and psychological situations of life? Power-dependence/exchange theory and relevant data are used in this book to help answer this complicated question. Crucial dimensions of interpersonal behavior, social symbolic communication, and individual social psychology are explored in the context of exchange network and group dynamics. Developed across the past 60 years, the research program covered here provides a distinctive perspective on “social exchange theory,” bringing to bear data produced through use of various research methods: qualitative ethnography, controlled laboratory experiment, vignette experiment, social sample survey, and psycholinguistic analysis.