Marriage is usually heterosexual and entails exclusive rights and duties of sexual performance, but there are instructive exceptions. For example, Nayar women of India would ritually marry men of a superior caste, have numerous lovers, and bear legitimate children. Among the Dahomey of West Africa, one woman could marry another; the first woman would be the legal "father" of the children (by other men) of the second. These examples highlight the functions of marriage to reproduce both a domestic division of labor and social relationships between different groups. Such functions are served even by the more common type of marriage, the union of one or more men with one or more women.
In most societies men and women are valued for their different roles in the household economy. Marriage therefore often occasions other economic exchanges. If a woman's labor is highly valued, a man may be required to offer valuable goods (bride-price) or his own labor (bride-service) to his wife's family. If a man's labor is more highly valued, the bride's family may offer goods (dowry) to the husband or his family.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.