Born to Be Wild: Second-to-Fourth Digit Length Ratio and Risk Preferences

The second-to-fourth digit length ratio of an individual’s hand (digit ratio) is a putative biomarker for prenatal exposure to testosterone. We are examining the hypothesized negative association between and preference risk taking within large U.S. population survey. Our statistical framework provides cardinal proxy true based on ordinal measurements accounts measurement error under assumptions Gaussianity time-invariant ratios. empirical findings support hypothesis suggest meaningful biological basis preferences.