Despite widespread knowledge that fraternity members are frequently involved in the sexual assaults of women, fraternities are rarely studied as social contexts-groups and organizations-that encourage the sexual coercion of women. An analysis of the norms and dynamics of the social construction of fraternity brotherhood reveals the highly masculinist features of fraternity structure and process, including concern with a narrow, stereotypical conception of masculinity and heterosexuality; a preoccupation with loyalty, protection of the group, and secrecy; the use of alcohol as a (...) weapon against women's sexual reluctance; the pervasiveness of violence and physical force; and an obsession with competition, superiority, and dominance. Interfraternity rivalry and competition-particularly over members, intramural sports, and women-encourage fraternity men's commodification of women. We conclude that fraternities will continue to violate women socially and sexually unless they change in fundamental ways. (shrink)