Why is there an Exceptional Sex Ratio of Spousal Homicides in the United States? A Replication and Extension of Wilson and Daly

Abstract

Wilson and Daly (1992) examined spousal homicide samples from the United States, Canada, Australia, and Great Britain and concluded: "For every 100 U.S. men who kill their wives, about 75 women kill their husbands; this spousal 'sex ratio of killing' (SROK) is more than twice that in other Western nations" (p.189). In this paper we examine the SROK for the United States using data obtained from the Federal Bureau of Investigation's Supplementary Homicide Report (SHR) to determine if Wilson and Daly's conclusion can be supported. While confirming Wilson and Daly's summary findings, our results show that the SROK is an elastic measure, varying over time, race, and ethnicity. In many segments of the U.S. population, the SROK is comparable to the sex ratio of killing for other Western nations. Moreover, the differences between various racial groups in the United States are greater than the differences between the U.S. and Canada, Australia and Great Britain, respectively. We suggest that socioeconomic factors and family structure are the major reasons for the disparity in the SROK for different racial groups in the United States and abroad. The implications of our findings for future research are discussed.