@TriversRobert No question there is an average sex difference in digit ratio. Question is if it's a good marker of prenatal T variance. CAIS women show same variability in digit ratio as XX women which points to within sex variation not being mainly due to
van Hemmen, J.-Do sex differences in CEOAEs and 2D:4D ratios reflect androgen exposure? A study in... https://t.co/EURCd1wcEM #OA
Replicates Berenbaum et al. (2009) which concluded that digit ratio is a crude marker of prenatal androgen exposure. https://t.co/yvKKW5jPC6 https://t.co/TDjkX41zoH
XY subjects with complete androgen insensitivity had female-typical 2D:4D indicating androgen action on digit ratio. https://t.co/feuq2QYBw7