equilibrium (p-values > 0.05), consistent with accurate genotyping. In addition, the SNPs were not in linkage disequilibrium (r2 < 0.13), indicating that the use of these selected SNPs does not provide redundant information and combined use allows for better coverage of variation across the OXTR gene. Third, PC1 was not was related to analyses’ measures, indicating population stratification was unlikely to confound results.
