Dopamine and risk choices in different domains: Findings among serious tournament bridge players |
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| Authors: | Anna Dreber David G. Rand Nils Wernerfelt Justin R. Garcia Miguel G. Vilar J. Koji Lum Richard Zeckhauser |
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| Affiliation: | (1) Institute for Financial Research (SIFR), Stockholm, Sweden;(2) Program for Evolutionary Dynamics, Harvard University, Cambridge, MA, USA;(3) Department of Economics, Massachusetts Institute of Technology, Cambridge, USA;(4) Laboratory of Evolutionary Anthropology and Health, Departments of Biological Sciences and Anthropology, Binghamton University, Binghamton, NY, USA;(5) Kennedy School of Government, Harvard University, Mailbox 41, 79 John F. Kennedy Street, Cambridge, MA 02138, USA;; |
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| Abstract: | ![]()
We explore how risk-taking in the card game contract bridge, and in a financial gamble, correlate with variation in the dopamine receptor D4 gene (DRD4) among serious tournament bridge players. In bridge risk-taking, we find significant interactions between genetic predisposition and skill. Among men with the 7-repeat allele of DRD4, namely 7R + men, those with more bridge skill take more good risks and fewer bad risks, while the opposite is found for less-expert 7R + men. Conversely, skill does not predict risk-taking among men without the 7R + allele. Consistent with some prior studies, we also find that 7R + men take more risk in the financial gamble. We find no relationship between 7R + and either risk measure among our female subjects. Our results suggest that the dopamine system plays an important role in individual differences in risk-taking among men, and is the first to distinguish between advantageous and disadvantageous risk-taking. |
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