Based on prior analyses (Schuckit and Smith, 2006), Hypothesis 2 predicted that SRE5-LR and impulsivity would correlate only weakly. The current findings indicated the two variables correlated at .14 and did not interact in predicting ALC PROBS in the SEM. The absence of a close relationship between the two key Baseline endophenotypes foreshadowed the differences in Figure 3 regarding how SRE5-LR and impulsivity related to ALC PROBS.
