The Family History Assessment Module (FHAM; Rice et al., 1995) assessed DSM-IV criteria of alcohol and other drug abuse and dependence in first and second degree relatives. Based on FHAM information, youth were categorized as FHP or FHN. FHP youth had at least one biological parent or two or more second degree relatives with a history of alcohol use disorder, and FHN youth had a total absence of familial substance use disorders. Intellectual functioning was assessed with the 4 subtests of the Wechsler Abbreviated Scale of Intelligence (WASI; Wechsler, 1999). The Child Behavior Checklist (CBCL; Achenbach & Rescorla, 2001) provided a level of adolescent psychopathological syndromes (e.g., internalizing and externalizing behaviors). The Hollingshead Index of Social Position assessed socioeconomic status based on occupation and educational attainment of each parent (Hollingshead, 1965). The Pubertal Development Scale assessed pubertal maturation (Petersen et al., 1988). Body mass index of each participant was calculated as weight (lb)/([height (in)]2 × 703).
