Sex Differences in Sexual Arousal and Finger Length Ratio

Article


Holmes, L., Watts-Overall, T., Slettevold, E., Gruia, D. C. and Rieger, G. 2021. Sex Differences in Sexual Arousal and Finger Length Ratio. The Journal of Sex Research. https://doi.org/10.1080/00224499.2021.1874262
AuthorsHolmes, L., Watts-Overall, T., Slettevold, E., Gruia, D. C. and Rieger, G.
Abstract

Most men show sexual arousal to one, preferred sex, whereas most women respond to both sexes, regardless of their sexual orientation. A different research program indicates that men have lower second-to-fourth finger length ratios (2D:4D) than women, possibly because men are exposed to higher levels of androgens during prenatal development. We hypothesized that sex differences in sexual arousal patterns are influenced by prenatal androgen exposure and would thus be explained by sex differences in 2D:4D. We measured the sexual response patterns of 139 men and 179 women via genital arousal and pupil dilation to erotic videos, in addition to their 2D:4D. Compared to women, men showed stronger responses to one sex over the other, although this pattern was clearer in genital arousal than pupil dilation. Men also had lower 2D:4D than women. However, there was no evidence that sex differences in sexual arousal related to sex differences in 2D:4D. Thus, whichever factor explains sex differences in sexual arousal patterns may not be reflected in 2D:4D.

JournalThe Journal of Sex Research
ISSN0022-4499
Year2021
PublisherTaylor & Francis (Routledge)
Publisher's version
License
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Anyone
Digital Object Identifier (DOI)https://doi.org/10.1080/00224499.2021.1874262
Publication dates
Online01 Feb 2021
Publication process dates
Deposited08 Feb 2021
FunderEconomic and Social Research Council
American Institute of Bisexuality
University of Essex
Copyright holder© 2021 The Authors
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