Genetic polymorphisms predict national differences in life history strategy and time orientation |
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| Institution: | 1. Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou, China;2. CAS Key Laboratory of Behavioral Science, Institute of Psychology, Beijing, China;3. Department of Psychology, University of Chinese Academy of Sciences, Beijing, China;4. Department of Psychology, Fujian Normal University, Fuzhou, China;5. School of Transportation, Fujian University of Technology, Fuzhou, China;1. Department of Psychology, Federal University of Rio Grande do Sul, Brazil;2. Department of Psychology, Technische Universität Chemnitz, Germany;3. Center Leo Apostel for Interdisciplinary Studies, Vrije Universiteit Brussel, Belgium;4. School of Public Health, University of Michigan, USA;5. Department of Psychology, University of Arizona, USA |
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| Abstract: | 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. |
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| Keywords: | Life-history strategy Time-orientation Genes Nations |
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