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Lookup NU author(s): Professor Daniel Nettle
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A comprehensive evolutionary framework for understanding the maintenance of heritable behavioral variation in humans is yet to be developed. Some evolutionary psychologists have argued that heritable variation will not be found in important, fitness-relevant characteristics because of the winnowing effect of natural selection. This article propounds the opposite view. Heritable variation is ubiquitous in all species, and there are a number of frameworks for understanding its persistence. The author argues that each of the Big Five dimensions of human personality can be seen as the result of a trade-off between different fitness costs and benefits. As there is no unconditionally optimal value of these trade-offs, it is to be expected that genetic diversity will be retained in the population. Copyright © 2006 by the American Psychological Association.
Author(s): Nettle D
Publication type: Article
Publication status: Published
Journal: American Psychologist
ISSN (print): 0003-066X
ISSN (electronic): 1935-990X
Publisher: American Psychological Association
PubMed id: 16953749
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