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Handedness in Boys with Gender Identity Disorder

Published online by Cambridge University Press:  01 October 2001

Kenneth J. Zucker ,
Nicole Beaulieu ,
Susan J. Bradley ,
Gina M. Grimshaw,  and
Anne Wilcox
Kenneth J. Zucker
Affiliation:
Centre for Addiction and Mental Health–Clarke Division and University of Toronto, Toronto, Canada
Nicole Beaulieu
Affiliation:
Centre for Addiction and Mental Health–Clarke Division and University of Toronto, Toronto, Canada
Susan J. Bradley
Affiliation:
Centre for Addiction and Mental Health–Clarke Division and University of Toronto, Toronto, Canada
Gina M. Grimshaw,
Affiliation:
Centre for Addiction and Mental Health–Clarke Division and University of Toronto, Toronto, Canada
Anne Wilcox
Affiliation:
Centre for Addiction and Mental Health–Clarke Division and University of Toronto, Toronto, Canada
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Abstract

Handedness preference was assessed in 205 boys with gender identity disorder and 205 clinical control boys referred for other reasons. Boys with gender identity disorder were significantly more likely to be left-handed than the clinical control boys (19.5% vs. 8.3%, respectively). The boys with gender identity disorder, but not the clinical control boys, also had a significantly higher rate of left-handedness compared to three independent, general population studies of nonreferred boys (11.8%; N = 14,253) by Hardyck, Goldman, and Petrinovich (1975), Calnan and Richardson (1976), and Eaton, Chipperfield, Ritchot, and Kostiuk (1996). Left-handedness appears to be a behavioral marker of an underlying neurobiological process associated with gender identity disorder in boys.

Keywords

Gender identity disorderhandednesssex differences
Type
Paper
Information
The Journal of Child Psychology and Psychiatry and Allied Disciplines , Volume 42 , Issue 6 , September 2001 , pp. 767 - 776
Copyright
© 2001 Association for Child Psychology and Psychiatry

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