Not-So-Strong Evidence for Gender Differences in Risk Taking
指出，声称女性比男性更风险规避的“强证据”存在统计误解，实际分析显示男女风险承担分布高度重叠，均值差异不大。
Based on a growing body of experimental and other studies, two recent economics survey articles claim to find “strong evidence” that women are “fundamental[ly]” more risk-averse than men. Yet, much of the literature fails to clearly distinguish between differences that hold at the individual level (categorical differences between men and women) and patterns that appear only at the aggregate level (statistically detectable differences in men's and women's distributions, such as different means). There is a resulting problem of possible misinterpretation, as well as a dearth of appropriate attention to substantive significance. Additionally, one of the two surveys suffers from problems of statistical validity, possibly due to confirmation bias. Applying appropriate, expanded statistical techniques to the same data, this study finds substantial similarity and overlap between the distributions of men and women in risk taking, and a difference in means that is not substantively large.