Much more than a ratio: Multivariate selection on female bodies

R. Brooks, J.P. Shelly, Jintu Fan, L. Zhai, D.K.P. Chau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)

Abstract

Studies of the attractiveness of female bodies have focussed strongly on the waist, hips and bust, but sexual selection operates on whole phenotypes rather than the relative proportions of just two or three body parts. Here, we use body scanners to extract computer-generated images of 96 Chinese women's bodies with all traits unrelated to body shape removed. We first show that Chinese and Australian men and women rate the attractiveness of these bodies the same. We then statistically explore the roles of age, body weight and a range of length and girth measures on ratings of attractiveness. Last, we use nonlinear selection analysis, a statistical approach developed by evolutionary biologists to explore the interacting effects of suites of traits on fitness, to study how body traits interact to determine attractiveness. Established proxies of adiposity and reproductive value, including age, body mass index and waist-to-hip ratio, were all correlated with attractiveness. Nonlinear response surface methods using the original traits consistently outperform all of these indices and ratios, suggesting that indices of youth and abdominal adiposity tell only part of the story of body attractiveness. In particular, our findings draw attention to the importance of integration between abdominal measures, including the bust, and the length and girth of limbs. Our results provide the most comprehensive analysis to date of the effect of body shape and fat deposition on female attractiveness. © 2010 European Society For Evolutionary Biology.
Original languageEnglish
Pages (from-to)2238-2248
Number of pages11
JournalJournal of Evolutionary Biology
Volume23
Issue number10
DOIs
Publication statusPublished - 1 Oct 2010

Keywords

  • Adiposity
  • Body mass index
  • Nonlinear selection analysis
  • Sexual selection
  • Waist-hip ratio

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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