Length of index and ring fingers differentially influence sexual attractiveness of men’s and women’s hands

  title={Length of index and ring fingers differentially influence sexual attractiveness of men’s and women’s hands},
  author={N. Saino and M. Romano and P. Innocenti},
  journal={Behavioral Ecology and Sociobiology},
Humans show intra- and intersexual variation in second (2D) relative to fourth (4D) finger length, men having smaller 2D:4D ratio, possibly because of differential exposure to sex hormones during fetal life. The relations between 2D:4D and phenotypic traits including fitness components reported by several studies may originate from the organizational effects that sex hormones have on diverse organs and their concomitant effect on 2D:4D. Evolutionary theory posits that sexual preferences are… Expand

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