Document Type
Article
Language
eng
Publication Date
3-6-2017
Publisher
Frontiers Media, S.A.
Source Publication
Frontiers in Endocrinology
Source ISSN
1664-2392
Abstract
Sexual dimorphism in ventrally measured digit ratios (2D:4D and other) has been related to prenatal sex-hormone levels. In the present series of three studies, we measured all digit lengths (excluding the thumb) on the dorsal, rather than the ventral, side of left and right hands and investigated the sexual dimorphism in digit ratios in three independent samples, two of them comprising adults (Study I, N = 104; Study II, N = 154), and one further, comprising kindergarten children (Study III, N = 64). Results show that men have lower digit-ratio values compared to women in digit ratios that include digit 5 as one of the constituents of the ratio (i.e., the 4D:5D, 3D:5D, and 2D:5D ratios). Boys have lower values compared to girls for the 4D:5D and 3D:5D ratios, and there is a similar trend of sexual dimorphism in the 2D:5D ratio. Thus, based on the evidence from dorsally measured digit ratios, the present findings from three samples are consistent with the idea that early sex-hormonal effects might be stronger for digit ratios involving digit 5, as compared to the classic, and frequently studied, ventrally measured 2D:4D ratio.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Kumar, Sanjay; Voracek, Martin; and Singh, Maharaj, "Sexual Dimorphism in Digit Ratios Derived from Dorsal Digit Length among Adults and Children" (2017). Mathematics, Statistics and Computer Science Faculty Research and Publications. 574.
https://epublications.marquette.edu/mscs_fac/574
Comments
Published version. Frontiers in Endocrinology, Vol. 8, No. 41 (2017). DOI. © 2017 Kumar, Voracek and Singh. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.