A geometric morphometric assessment of hand shape and comparison to the 2D: 4D digit ratio as a marker of sexual dimorphism

P.G. Sanfilippo, Alex Hewitt, Jenny Mountain, David Mackey

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Twin studies are extremely useful for investigating hypotheses of genetic influence on a range of behavioral and physical traits in humans. Studies of physical traits, however, are usually limited to size-related biological characteristics because it is inherently difficult to quantify the morphological counterpart – shape. In recent years, the development of geometry-preserving analytical techniques built upon multivariate statistical methodologies has produced a new discipline in biological shape analysis known as geometric morphometrics. In this study of hand shape analysis, we introduce the reader already familiar with the field of twin research to the potential utility of geometric morphometrics and demonstrate the cross-discipline applicability of methods. We also investigate and compare the efficacy of the 2D:4D ratio, a commonly used marker of sexual dimorphism, to the fully multivariate approach of shape analysis in discriminating between male and female sex. Studies of biological shape variation utilizing geometric morphometric techniques may be completed with software freely available on the Internet and time invested to master the small learning curve in concepts and theory.
Original languageEnglish
Pages (from-to)590-600
JournalTwin Research and Human Genetics
Volume16
Issue number2
Early online date27 Feb 2013
DOIs
Publication statusPublished - Apr 2013

Fingerprint Dive into the research topics of 'A geometric morphometric assessment of hand shape and comparison to the 2D: 4D digit ratio as a marker of sexual dimorphism'. Together they form a unique fingerprint.

Cite this