The author examines the impact of colonialism and the cash economy on the Nandi, a semi-pastoral and patrilineal people of western Kenya, emphasizing changes in women's and men's economic roles and their respective relations to property and to each other. Since the sex roles associated with production and property relations are linked to sex roles in other areas - in the marriage system, husband-wife relations, kinship, cultural ideals of male and female, ritual relations, participation in community affairs - these areas are also analyzed. The author asks whether the changes in Nandi society have been favorable or unfavorable to women. Has their economic position improved or declined as a result of colonialism and socioeconomic change? Has sexual stratification increased or decreased? How have different categories of women - wives, widows, never-married women, participants in woman-woman marriages - been differently affected by changed circumstances? Although most of the book is ethnographic in nature, providing a detailed account of Nandi inter-gender roles in the context of economic history and at the processes that have induced changes in the respective roles of men and women.