To examine genetic nurture effects, we present the results from the model testing the effect of adolescent EXT PGS on externalizing behavior without the inclusion of parental genotype, which would lead genetic nurture effects to be assumed in the estimate of adolescent EXT PGS if it existed. We then fit models that included both adolescent EXT PGS and parental EXT PGS, which tests the effect of parental EXT PGS that uniquely predicts their children’s externalizing behavior in a way that is not explained by adolescent’s own EXT PGS. A unique effect from parental EXT PGS in the combined model would provide evidence of genetic nurture. Table 3 summarizes the results from these analyses for each ancestry group, separately.
