of heaviest drinking). SRE5 and total scores incorporating all three epochs (SRET) were generated by summing the number of drinks required for up to four effects (feeling first effect, slurring speech, unsteady gait, or unwanted falling asleep), and dividing that by the number of the effects reported (Ray et al., 2007; Schuckit et al., 1997). Thus, higher SRE scores indicate more drinks needed for effects, or a lower LR per drink. The SRE Cronbach's α is >.90, with retest reliabilities of .8. Externalizing characteristics were first evaluated at T10 and T15 using the Novelty Seeking from the Tridimensional Personality Questionnaire (TPQ), Sensation Seeking from the Zuckerman Questionnaire, and Impulsivity from the Karolinska Personality Questionnaire (Cloninger et al., 1996; Schalling and Asberg, 1985; Zuckerman and Kuhlman, 2000).
