< 0.01) and adolescents with the GG genotype (β = 3.85, P < 0.001) although this association was stronger for adolescents with the GG genotype as hypothesized. This suggests that at low levels of peer delinquency, adolescents with the risk genotype (GG) have lower rates of rule breaking behavior compared to A-carriers. In contrast, at high levels of peer delinquency, adolescents with the risk genotype have greater rates of rule breaking behavior compared to A-carriers. Yet, the lower and upper bounds of regions of significance were −2.07 and −0.13, respectively. This indicates that these two regression lines were significantly different for all possible points when the score of peer delinquency was lower than −2.07 (outside of the range of responding) or higher than −0.13 (represented by the shaded area in Fig.2). Similar to the previous model, this suggests that it is only at average to high levels of peer delinquency that the regression lines for A-carriers and those with the GG genotype differ significantly in terms of rule breaking behavior.
