This critical review of behavior patterns in nonhuman primates is an excellent study of the importance of female roles in different social groups and their significance in the evolution of human social life. "A book that properly illuminates in rich detail not only developmental and socioecological aspects of primate behavior but also how and why certain questions are asked. In addition, the book frequently focuses on insufficiently answered questions, especially those concerned with the evolution of primate sex differences. Fedigan's book is unique . . . because it places primate adaptations and our explanation of those patterns in a larger intellectual framework that is easily and appropriately connected to many lines of research in different fields (sociology, psychology, anthropology, neurobiology, endocrinology, and biology)—and not in inconsequential ways, either."—James McKenna, American Journal of Primatology "This is the feminist critique of theories of primate and human evolution."—John H. Cook, Nature