The second to fourth digit ratio, sociosexuality, and offspring sex ratio

Fink, Bernhard, Manning, John and Neave, Nick (2005) The second to fourth digit ratio, sociosexuality, and offspring sex ratio. Behavioral and Brain Sciences, 28 (2). pp. 283-284. ISSN 0140-525X

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Official URL: https://doi.org/10.1017/S0140525X05300057

Abstract

Previous research has suggested that offspring sex ratio may be influenced by the actions of prenatal sex steroids, principally androgens. The relative length of the second (index finger) to the fourth digit (ring finger) has been reported to be a proxy to prenatal testosterone levels. This trait is sexually dimorphic, such that males display a significantly lower 2D:4D ratio (indicating higher testosterone exposure), and this dimorphism appears robust across different populations. We suggest that digit ratio (2D:4D) may form a useful marker to help explain variation in sex ratio and sociosexuality.

Item Type: Article
Subjects: C800 Psychology
Department: Faculties > Health and Life Sciences > School of Life Sciences > Psychology
Depositing User: Becky Skoyles
Date Deposited: 21 Mar 2017 15:46
Last Modified: 21 Mar 2017 15:46
URI: http://nrl.northumbria.ac.uk/id/eprint/30147

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