Journal
PERSONALITY AND INDIVIDUAL DIFFERENCES
Volume 76, Issue -, Pages 204-215Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.paid.2014.12.014
Keywords
Life-history strategy; Time-orientation; Genes; Nations
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The existence of a genetic factor behind group-level differences in life history strategy (LHS) has long been disputed. A number of recent studies suggest that some polymorphisms in the androgen receptor gene AR, the dopamine receptor gene DRD4, and the 5-HTTLPR VNTR of the serotonin transporter gene are associated with risk acceptance versus prudence and a short-term versus long-term time orientation, which are important aspects of LHS. We integrated studies from diverse nations reporting the prevalence of these three polymorphisms for many countries. We collected national indices for each of the three polymorphisms and found that they define a strong, single factor, yielding a single LHS-related, national genetic index. As expected, this index is strongly associated with reported national measures of LHS and time orientation, even after controlling for socioeconomic variables. The genetic effect seems especially strong across societies with high socioeconomic inequality. (C) 2015 Published by Elsevier Ltd.
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