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Evidence for assortative mating on digit ratio (2D:4D), a biomarker for prenatal androgen exposure.
J Biosoc Sci. 2007 Jul; 39(4):599-612.JB

Abstract

The second-to-fourth digit ratio (2D:4D) presents an anatomical sex difference in humans. On average, men tend to have lower 2D:4D compared with women. There is fairly strong evidence for a role of the 2D:4D ratio as a biomarker for the organizational (permanent) effects of prenatal testosterone on the brain and behaviour. Recently, an accumulating research programme has shown 2D:4D to be related to a multitude of sex-dependent, hormonally influenced biosocial traits and phenotypes which reach into the domains of ability, behaviour, fertility, health, personality and sexuality. This study investigated the degree of assortative mating (spousal similarity) in a sample of 239 native Austrian couples of parental or grandparental age, all of them having reproduced. Results included: (i) significant spousal correlations of +0.19 and +0.18 for right-hand and left-hand 2D:4D, respectively, and +0.24 for average 2D:4D; (ii) no assortative mating effect on the right-minus-left difference in 2D:4D; (iii) indications consistent with a possible generational decrease of spousal similarity in 2D:4D; (iv) a prevalence of couples with a lower right-hand 2D:4D observed in the husband compared with his wife; and (v) relations of spousal 2D:4D patterns to spousal age differences, such that matings of men with more male-typical trait expressions (namely, a generally low right-hand 2D:4D or showing a lower right-minus-left 2D:4D difference than their wives) implicated larger male-minus-female age differences, i.e. younger wives. It is argued that assortative mating on 2D:4D operates indirectly and may be mediated through the assortment on other, more perceptible, physical traits and psychological phenotypes that entertain associations with 2D:4D and are relevant for courtship and mate choice.

Authors+Show Affiliations

University of Vienna, Austria.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17052382

Citation

Voracek, Martin, et al. "Evidence for Assortative Mating On Digit Ratio (2D:4D), a Biomarker for Prenatal Androgen Exposure." Journal of Biosocial Science, vol. 39, no. 4, 2007, pp. 599-612.
Voracek M, Dressler SG, Manning JT. Evidence for assortative mating on digit ratio (2D:4D), a biomarker for prenatal androgen exposure. J Biosoc Sci. 2007;39(4):599-612.
Voracek, M., Dressler, S. G., & Manning, J. T. (2007). Evidence for assortative mating on digit ratio (2D:4D), a biomarker for prenatal androgen exposure. Journal of Biosocial Science, 39(4), 599-612.
Voracek M, Dressler SG, Manning JT. Evidence for Assortative Mating On Digit Ratio (2D:4D), a Biomarker for Prenatal Androgen Exposure. J Biosoc Sci. 2007;39(4):599-612. PubMed PMID: 17052382.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evidence for assortative mating on digit ratio (2D:4D), a biomarker for prenatal androgen exposure. AU - Voracek,Martin, AU - Dressler,Stefan G, AU - Manning,John T, Y1 - 2006/10/20/ PY - 2006/10/21/pubmed PY - 2007/10/13/medline PY - 2006/10/21/entrez SP - 599 EP - 612 JF - Journal of biosocial science JO - J Biosoc Sci VL - 39 IS - 4 N2 - The second-to-fourth digit ratio (2D:4D) presents an anatomical sex difference in humans. On average, men tend to have lower 2D:4D compared with women. There is fairly strong evidence for a role of the 2D:4D ratio as a biomarker for the organizational (permanent) effects of prenatal testosterone on the brain and behaviour. Recently, an accumulating research programme has shown 2D:4D to be related to a multitude of sex-dependent, hormonally influenced biosocial traits and phenotypes which reach into the domains of ability, behaviour, fertility, health, personality and sexuality. This study investigated the degree of assortative mating (spousal similarity) in a sample of 239 native Austrian couples of parental or grandparental age, all of them having reproduced. Results included: (i) significant spousal correlations of +0.19 and +0.18 for right-hand and left-hand 2D:4D, respectively, and +0.24 for average 2D:4D; (ii) no assortative mating effect on the right-minus-left difference in 2D:4D; (iii) indications consistent with a possible generational decrease of spousal similarity in 2D:4D; (iv) a prevalence of couples with a lower right-hand 2D:4D observed in the husband compared with his wife; and (v) relations of spousal 2D:4D patterns to spousal age differences, such that matings of men with more male-typical trait expressions (namely, a generally low right-hand 2D:4D or showing a lower right-minus-left 2D:4D difference than their wives) implicated larger male-minus-female age differences, i.e. younger wives. It is argued that assortative mating on 2D:4D operates indirectly and may be mediated through the assortment on other, more perceptible, physical traits and psychological phenotypes that entertain associations with 2D:4D and are relevant for courtship and mate choice. SN - 0021-9320 UR - https://www.unboundmedicine.com/medline/citation/17052382/Evidence_for_assortative_mating_on_digit_ratio__2D:4D__a_biomarker_for_prenatal_androgen_exposure_ L2 - https://www.cambridge.org/core/product/identifier/S0021932006001647/type/journal_article DB - PRIME DP - Unbound Medicine ER -