Countries with fewer males have more violent crime: marriage markets and mating aggression
Article first published online: 4 NOV 2008
© 2008 Wiley-Liss, Inc.
Volume 35, Issue 1, pages 49–56, January/February 2009
How to Cite
Barber, N. (2009), Countries with fewer males have more violent crime: marriage markets and mating aggression. Aggr. Behav., 35: 49–56. doi: 10.1002/ab.20291
- Issue published online: 3 DEC 2008
- Article first published online: 4 NOV 2008
- Manuscript Accepted: 7 OCT 2008
- Manuscript Revised: 18 SEP 2008
- Manuscript Received: 9 NOV 2007
- sex ratio;
- marriage markets;
- mating effort
Violent crimes (murders, rapes, and assaults) are substantially higher in countries with a relative scarcity of men according to research using INTERPOL data [Barber, 2000a]. This is a paradox given that males are more criminally violent and likely reflects increased direct mating competition. The present research sought to confirm and extend Barber's [2000a] finding, using murder data from the United Nations and homicides from World Health Organization that are of higher quality than the INTERPOL data, and using more rigorous controls. In addition to level of economic development, control variables included, income inequality, urbanization, population density, the number of police, and whether the country was a major center of illegal drug trafficking. Regression analyses with all controls found that killings in both data sets increased with declines in the male proportion of the population. The findings are discussed in terms of direct reproductive competition and alternative explanations are considered. Aggr. Behav. 35:49–56, 2009. © 2008 Wiley-Liss, Inc.