Sexual orientation and the second to fourth finger length ratio: a meta-analysis in men and women.

@article{Grimbos2010SexualOA,
  title={Sexual orientation and the second to fourth finger length ratio: a meta-analysis in men and women.},
  author={Teresa Grimbos and Khytam Dawood and Robert Philip Burriss and Kenneth J. Zucker and David A. Puts},
  journal={Behavioral neuroscience},
  year={2010},
  volume={124 2},
  pages={
          278-87
        }
}
The ratio of the lengths of the second and fourth fingers (2D:4D) may serve as a marker for prenatal androgen signaling. Because people are typically unaware of their 2D:4D, its use allows possible effects of early sex hormone regimes and socialization to be disentangled. We conducted a meta-analysis on relationships between 2D:4D and sexual orientation in men and women in 18 independent samples of men and 16 independent samples of women. Collectively, these samples comprised 1,618 heterosexual… Expand
Prenatal Influences on Sexual Orientation: Digit Ratio (2D:4D) and Number of Older Siblings
  • K. Kangassalo, M. Pölkki, M. Rantala
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Prenatal androgen levels are suggested to influence sexual orientation in both sexes. The 2D:4D digit ratio has been found to associate with sexual orientation, but published findings have often beenExpand
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Compared to women, men showed stronger responses to one sex over the other, although this pattern was clearer in genital arousal than pupil dilation, and there was no evidence that sex differences in sexual arousal related to sex Differences in 2D:4D. Expand
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Examination of patterns in identical twins with discordant sexual orientations found males had more masculinized 2D:4D ratios than females, and this sex difference did not vary by sexual orientation. Expand
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We examined the relationship between 2D:4D digit ratio and sexual orientation in men from China and analyzed the influences of the components used to assess sexual orientation and the criteria usedExpand
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