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Evidence for Shared Genetic Dominance Between the General Factor of Personality, Mental and Physical Health, and Life History Traits

Published online by Cambridge University Press:  21 February 2012

Aurelio José Figueredo  and
J. Philippe Rushton
Aurelio José Figueredo*
Affiliation:
University of Arizona, Tucson, Arizona, United States of America. [email protected]
J. Philippe Rushton
Affiliation:
University of Western Ontario, London, Canada.
*
*Address for correspondence: Aurelio José Figueredo, University of Arizona, Tucson, Arizona 85721-0068, USA.

Abstract

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We reanalyze previously published data on 309 MZ and 333 DZ twin pairs aged 25 to 74 years from the MIDUS survey, a nationally representative archived sample, to examine how much of the genetic covariance between a general factor of personality (GFP), a lower-order life history factor, and a general physical and mental health factor, is of the nonadditive variety. We found nonadditive genetic effects (D) could not be ruled out as a contributor to the shared variance of these three latent factors to a Super-K Life History factor. We suggest these genetic correlations support the view that a slow (K-selected) life history strategy, good health, and the GFP coevolved and are mutually coadapted through directional selection.

Keywords

Big Oneheritabilitynonadditive genetic variancegeneral factor of personality
Type
Articles
Information
Twin Research and Human Genetics , Volume 12 , Issue 6 , 01 December 2009 , pp. 555 - 563
Copyright
Copyright © Cambridge University Press 2009