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| Finger length ratio (2D:4D) correlates with physical aggression in men but not in women. |
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| TS-Si Research Service | |||||
| Friday, 06 November 2009 23:33 | |||||
Finger length ratio (2D:4D) correlates with physical aggression in men but not in women. Biol Psychol. 2005 Mar;68(3):215-22 Authors: Bailey AA, Hurd PL Finger length ratio (2D:4D) is a sexually dimorphic trait. Men have relatively shorter second digits (index fingers) than fourth digits (ring fingers). Smaller, more masculine, digit ratios are thought to be associated with either higher prenatal testosterone levels or greater sensitivity to androgens, or both. Men with more masculine finger ratios are perceived as being more masculine and dominant by female observers, and tend to perform better in a number of physical sports. We hypothesized that digit ratio would correlate with propensity to engage in aggressive behavior. We examined the relationship between trait aggression, assayed using a questionnaire, and finger length ratio in both men and women. Men with lower, more masculine, finger length ratios had higher trait physical aggression scores (r(partial) = -0.21, N = 134, P = 0.028). We found no correlation between finger length ratio and any form of aggression in females. These results are consistent with the hypothesis that testosterone has an organizational effect on adult physical aggression in men. PMID: 15620791 [PubMed - indexed for MEDLINE]  The TS-Si Research Service consolidates information on research intiatives and findings relevant to individuals who correct the misalignment of their brains and their anatomical sex. The service tracks key scientific and medical developments at every stage of the process — from early consideration of research opportunities and published findings through practical application in clinical settings. Researchers and students from qualifying institutions regularly receive special emailings from TS-Si that consist of abstracts and other materials that support their interest areas. The TS-Si News Service is a collaborative effort by TS-Si.org editors, contributors, and corresponding institutions. The sources can include the cited individuals and organizations, as well as TS-Si.org staff contributions. Articles and news reports do not necessarily convey official positions of TS-Si, its partners, or affiliates. We welcome your comments. Use the form below to leave a public comment or send private correspondence via the TS-Si Contact Page. We will not divulge any personal details or place you on a mailing list without your permission.Posted:                       Add this page to your favorite social bookmarking websites. To create link towards this article on your website, copy and paste the text below in your page. Preview : 
Finger length ratio (2D:4D) correlates with physical aggression in men but not in women. Friday, 06 November 2009
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The TS-Si News Service
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are collaborations of TS-Si officials, staff, contributors, and corresponding institutions. Contents do not necessarily convey official positions of
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