Does sexual selection explain human sex differences in aggression?
- 20 August 2009
- journal article
- research article
- Published by Cambridge University Press (CUP) in Behavioral and Brain Sciences
- Vol. 32 (3-4), 249-266
- https://doi.org/10.1017/s0140525x09990951
Abstract
I argue that the magnitude and nature of sex differences in aggression, their development, causation, and variability, can be better explained by sexual selection than by the alternative biosocial version of social role theory. Thus, sex differences in physical aggression increase with the degree of risk, occur early in life, peak in young adulthood, and are likely to be mediated by greater male impulsiveness, and greater female fear of physical danger. Male variability in physical aggression is consistent with an alternative life history perspective, and context-dependent variability with responses to reproductive competition, although some variability follows the internal and external influences of social roles. Other sex differences, in variance in reproductive output, threat displays, size and strength, maturation rates, and mortality and conception rates, all indicate that male aggression is part of a sexually selected adaptive complex. Physical aggression between partners can be explained using different evolutionary principles, arising from the conflicts of interest between males and females entering a reproductive alliance, combined with variability following differences in societal gender roles. In this case, social roles are particularly important since they enable both the relatively equality in physical aggression between partners from Western nations, and the considerable cross-national variability, to be explained.Keywords
This publication has 152 references indexed in Scilit:
- Increased aggression and activity level in 3- to 11-year-old girls with congenital adrenal hyperplasia (CAH)Hormones and Behavior, 2007
- The relation between physical aggression, size and strength, among a sample of young Indian menPersonality and Individual Differences, 2007
- Comparative rates of violence in chimpanzees and humansPrimates, 2005
- Homicide by men in Japan, and its relationship to age, resources and risk takingEvolution and Human Behavior, 2005
- Marital Residence among ForagersCurrent Anthropology, 2004
- Sex differences in physically aggressive acts between heterosexual partners: A meta-analytic reviewAggression and Violent Behavior, 2002
- Testosterone, Physical Aggression, Dominance, and Physical Development in Early AdolescenceInternational Journal of Behavioral Development, 1998
- Roman polygynyEthology and Sociobiology, 1992
- Beyond the evil empire: Horseplay and aggressionAggressive Behavior, 1990
- Assessment strategy and the evolution of fighting behaviourJournal of Theoretical Biology, 1974