Study Finds Physical Fights Common Among Co-Wives in Polygynous Societies

Key points

• Maryanne L. Fisher analyzed ethnographic records from 19 cultures to examine co-wife competition in polygynous marriages.
• Physical aggression was documented in 12 of the 19 cultures (63.2%), making it the most frequently recorded method of competition.
• Competition for a husband's sexual and emotional attention was the primary cause of conflict, noted in 73.7% of the cultures studied.
• Indirect tactics like gossip and social exclusion were less common, appearing in only 2 cultures, though combined indirect aggression was present in 47-58% of cases.
• Societies often used spatial separation or marrying sisters as preventative measures to reduce conflict between co-wives.

Background

Previous research, such as the 'staying alive' hypothesis proposed by Anne Campbell, suggested that women avoid physical fights to protect their survival and that of their children, relying instead on indirect social tactics. A 2023 study covered by PsyPost also found that women reported more envy and indirect competition than men. This new study builds on that background by examining high-stakes environments where direct confrontation may be more likely.

Why it matters

The findings challenge the assumption that female rivalry is predominantly indirect, suggesting that women's competitive strategies are flexible and context-dependent. Understanding these dynamics can provide insights into human behavior, conflict resolution, and the evolution of social structures in polygynous societies.

What to watch

Future longitudinal research could explore how verbal disputes escalate into physical fights and when conflicts are successfully interrupted. The study also highlights the need for more diverse cultural samples to generalize findings, as the current sample was unevenly distributed across regions.