The Second to Fourth Digit Ratio (2D:4D) in a Japanese Twin Sample: Heritability, Prenatal Hormone Transfer, and Association with Sexual Orientation

@article{Hiraishi2012TheST,
  title={The Second to Fourth Digit Ratio (2D:4D) in a Japanese Twin Sample: Heritability, Prenatal Hormone Transfer, and Association with Sexual Orientation},
  author={K. Hiraishi and Shoko Sasaki and Chizuru Shikishima and J. Ando},
  journal={Archives of Sexual Behavior},
  year={2012},
  volume={41},
  pages={711-724}
}
  • K. Hiraishi, Shoko Sasaki, +1 author J. Ando
  • Published 2012
  • Psychology, Medicine
  • Archives of Sexual Behavior
  • The second to fourth digit ratio has been argued to reflect prenatal hormonal influences and is reportedly associated with various psychological and behavioral traits, such as sexual orientation, cognitive abilities, and personality. We examined genetic and environmental influences on the second to fourth digit ratio (2D:4D) using a Japanese twin sample (N = 300). The genetic analysis showed substantial additive genetic influences for both right and left hand 2D:4D. The rest of the variance was… CONTINUE READING
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