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The Evolution of Personality and Individual Differences$
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David M. Buss and Patricia H. Hawley

Print publication date: 2010

Print ISBN-13: 9780195372090

Published to Oxford Scholarship Online: May 2011

DOI: 10.1093/acprof:oso/9780195372090.001.0001

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Twin, Adoption, and Family Methods as Approaches to the Evolution of Individual Differences

Twin, Adoption, and Family Methods as Approaches to the Evolution of Individual Differences

Chapter:
(p.303) 11 Twin, Adoption, and Family Methods as Approaches to the Evolution of Individual Differences
Source:
The Evolution of Personality and Individual Differences
Author(s):

Nancy L. Segal

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195372090.003.0011

Individual differences in behavior have been of great concern to behavioral geneticists whose interests span a wide range of phenotypes. Individual behavioral variation has, however, received less attention from evolutionarily-minded investigators. These two approaches have generally proceeded apart, yet this has started to change as each stands to gain from contact with the other. This chapter provides a brief overview of these two disciplines and their current relationship with one another. It then reviews the biological bases of twinning, twin and adoption research methods, and studies that have used behavioral-genetic methods to address selected evolutionary questions. The chapter discusses the implications of the findings for understanding individual differences within an evolutionary framework and concludes with a look at future research directions.

Keywords:   individual differences, behavioral genetics, twinning, evolutionary psychology, individual behavioral variation

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