EXPERIMENTAL AND SELF‐REPORTED MEASURES OF RISK TAKING AND DIGIT RATIO (2D:4D): EVIDENCE FROM A LARGE, SYSTEMATIC STUDY
系统研究了指长比（2D:4D）这一产前睾酮暴露的生物标记与两种风险承担测量（基于真实金钱激励的彩票风险偏好和自我报告的风险态度）之间的关系，发现指长比与风险偏好显著相关，但与自我报告的风险态度无关。
Abstract We systematically investigate the links between the digit ratio (2D:4D)—a biomarker for prenatal testosterone exposure—and two measures of individual risk taking: (i) risk preferences (RP) over lotteries with real monetary incentives and (ii) self‐reported risk attitude (RA). We find that both the right‐hand and the left‐hand digit ratio are significantly associated with RP: Subjects with lower digit ratios tend to choose riskier lotteries. Neither digit ratio, however, is associated with self‐reported RA.