The distribution of handedness in chimpanzees: estimating right shift in Hopkins' sample

Laterality
M Annett

Abstract

The right shift (RS) theory of handedness and cerebral dominance suggests that hand preference depends on an underlying continuous normal distribution of asymmetry for hand skill. The distribution in humans is displaced towards the right, in comparison with the unbiased distribution expected for most nonhuman species. Reports that chimpanzees are more often right- than left-handed raise the question whether they also have a distribution of asymmetry shifted to the right. This paper shows how to estimate extent of RS from classifications of hand preference as left, mixed, and right. Whereas the human distribution is shifted by about 1.0 z, that of chimpanzees in the sample of Hopkins, Cantalupo, Freeman, Russell, Kachin, and Nelson (2005) is shifted by about 0.32 z.

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Citations

Feb 23, 2008·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Scott H Frey
Dec 10, 2008·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Stefano GhirlandaGiorgio Vallortigara
Dec 10, 2008·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·S M SchaafsmaT G G Groothuis
Nov 23, 2011·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Agnes Roby-BramiStéphane Jacobs
Nov 23, 2011·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Scott H Frey, Daniel J Povinelli
Nov 20, 2009·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Simon S KellerWilliam Hopkins
Aug 4, 2006·Developmental Psychobiology·William D HopkinsSteven J Schapiro
Mar 15, 2011·Developmental Psychobiology·Eliza L NelsonMelinda A Novak
Sep 19, 2012·American Journal of Primatology·Kimberley A Phillips, Claudia R Thompson
Dec 20, 2012·PloS One·Andrey GiljovYegor Malashichev
Jan 10, 2013·PloS One·Isabelle S HäberlingMichael C Corballis
Dec 10, 2008·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Michael C Corballis
Dec 10, 2008·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Lesley J Rogers
Dec 10, 2008·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Luca Tommasi
Jan 28, 2014·PLoS Biology·Michael C Corballis
Jun 10, 2020·Laterality·Alan A BeatonChris McManus

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