PSYCHOLOGIA
Online ISSN : 1347-5916
Print ISSN : 0033-2852
ISSN-L : 0033-2852

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A REEXAMINATION OF THE EFFECTS OF CULTURE AND DOPAMINE D4 RECEPTOR GENE INTERACTION ON SOCIAL ORIENTATION
Keiko ISHIITakahiko MASUDAMasahiro MATSUNAGAYasuki NOGUCHIHidenori YAMASUEYohsuke OHTSUBO
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論文ID: 2021-B014

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The dopamine D4 receptor gene (DRD4) is associated with novelty-seeking and risk-taking behaviors that have had an adaptive value in the history of human migration. It also plays a role in moderating the extent to which people adhere to cultural norms and practices. The aim of this study was to replicate previous findings about how DRD4 polymorphism interacts with cultural differences in social orientation, which revealed Westerners’ emphasis on independence and East Asians’ emphasis on interdependence. Testing Japanese and European Canadian undergraduates (n = 784), we succeeded in replicating these previous findings: the Canadian students were more independent, whereas the Japanese students were more interdependent. However, none of the interaction effects between culture and DRD4 were significant. Implications for candidate gene research investigating gene–environment and gene–culture interactions are discussed.

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