Data from: Association between arginine vasopressin receptor 1A (AVPR1A) polymorphism and inequity aversion

Although numerous studies have focused on brain functions related to
inequity aversion, few have examined its genetic basis. Here, we show the
association between estimated inequity aversion and polymorphisms in three
genes associated with human sociality. Non-student adult participants took
part in five economic game experiments on different days. Disadvantageous
inequity aversion (DIA) and advantageous inequity aversion (AIA) were
calculated from behavioural responses using Bayesian estimation. We
investigated the association between genetic polymorphisms in the oxytocin
receptor (OXTR rs53576), arginine vasopressin receptor 1A (AVPR1A RS3),
and opioid receptor mu 1 (OPRM1 rs1799971) and inequity aversion.
Regarding AVPR1A RS3, participants with the SS genotype had higher AIA
than those with the SL or LL genotypes, but no association was found for
DIA. Moreover, we observed no aversion associations for OXTR rs53576 or
OPRM1 rs1799971. The results suggest that AVPR1A plays an important role
in aversion when one's own gain is greater than that of others. Our
findings may provide a solid theoretical basis for future studies on the
relationship between genetic polymorphisms and inequity aversion.