• Psychology, Medicine
  • Published in Behavioral neuroscience 2010
  • DOI:10.1037/a0018764

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 P 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… CONTINUE READING

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Prenatal influences on sexual orientation: digit ratio (2D:4D) and number of older siblings.

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