Chapter 6: Social Organization

Kinship systems represent a cultural universal that classifies relatives and establishes reciprocal obligations governing inheritance, marriage eligibility, residential patterns, and social status. Societies recognize both consanguineal relationships based on blood ties and affinal relationships created through marriage, while extending kinship terminology through fictive kinship to encompass unrelated individuals or natural elements. Descent groups including lineages, clans, moieties, and phratries organize individuals into named corporations that regulate identity, political authority, ceremonial participation, and marital possibilities. Systems of descent follow unilineal patterns through patrilineal or matrilineal descent, bilateral inheritance through both parents, or more complex frameworks such as the Hawai'ian, Eskimo, Iroquois, Omaha, Crow, and Sudanese systems, with Indigenous Australian Section systems representing highly formalized alternatives. Totemism frequently emerges within descent organizations, assigning spiritual protectors and symbolic identities to particular groups. Marriage, equally universal, formalizes rights and obligations surrounding reproduction, property transmission, legitimacy of offspring, and political alliance formation. Exogamous rules mandate marriage outside the group while endogamous preferences restrict unions within specific categories, with incest prohibitions varying across societies. Marriage forms range from monogamous to serially monogamous to polygamous arrangements, with postmarital residence patterns determining where newly married couples establish households. Non-kinship organizations including sodalities and age grades provide voluntary membership based on shared interests, occupations, or life stages, creating parallel structures of social organization. The chapter addresses social stratification through distinctions between egalitarian societies with minimal ranking and stratified societies organized around class systems permitting mobility or caste systems enforcing rigid inherited status. Status and rank differentiate between informal, changeable social positions and formalized hierarchical categories, which may be ascribed through birth or achieved through individual accomplishment. Ceremonial systems such as the potlatch demonstrate how societies publicly perform and validate rank distinctions through elaborate exchange practices.