Comparative Study of Digit Ratios (2D:4D and Other) and Novel Measures of Relative Finger Length: Testing Magnitude and Consistency of Sex Differences across Samples

@article{Voracek2009ComparativeSO,
  title={Comparative Study of Digit Ratios (2D:4D and Other) and Novel Measures of Relative Finger Length: Testing Magnitude and Consistency of Sex Differences across Samples},
  author={Martin Voracek},
  journal={Perceptual and Motor Skills},
  year={2009},
  volume={108},
  pages={83 - 93}
}
  • M. Voracek
  • Published 1 February 2009
  • Psychology, Biology
  • Perceptual and Motor Skills
Digit ratios, such as the frequently studied second-to-fourth digit ratio (2D:4D), are already sexually differentiated in utero, postnatally fairly stable, and thus commonly held as possible markers for prenatal androgen levels. Based on six independent samples, totaling 381 male and 420 female subjects from different age bands, this study investigated the magnitude and cross-sample consistency of sex differences in all six possible digit ratios (2D:3D, 2D:4D, 2D:5D, 3D:4D, 3D:5D, 4D:5D) and in… 

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Digit Ratios (2D:4D and other) and Relative Thumb Length: A Test of Developmental Stability

TLDR
These findings mirror those reported for the second-to-fourth digit ratio (2D:4D), a likely biomarker for the organizational (permanent) effects of prenatal androgens on the human brain and body, and appear to be developmentally unstable.

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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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