Results from the joint correlation-moderation model are presented in Table 3 and graphically represented in Panels B and C of Figure 2. First, when correlated influences and moderation were jointly modeled between RSI and PSI, there was no evidence for common genetic influences between RSI and PSI – instead (Δχ2=3.42 for 2 df), PSI was found to moderate the specific genetic influences on RSI. Second, there continued to be no evidence for moderation of shared environmental influences on RSI and all shared environmental influences on RSI were overlapping with PSI. Third, there was evidence for overlapping non-shared environmental influences on PSI and RSI. Furthermore, PSI moderated both these overlapping and the specific non-shared environmental influences on RSI. As shown in Panel B of Figure 2, similar to the Moderating Influences model, total variance (heavy solid line), as well as variance attributable to additive genetic (dotted line) and non-shared environmental (light solid line) factors increased with increasing PSI – however, by jointly modeling PSI with RSI, we were able to capture shared environmental factors that overlap between PSI and RSI –
