Twins completed telephone adaptations of the Semi-Structured Assessment of the Genetics of Alcoholism (SSAGA; Bucholz et al., 1994; Hesselbrock et al., 1999). Much of the SSAGA was retained at reinterview, with additional items from the Family History Assessment Module (FHAM; Rice et al., 1995) included to assess biological coparent psychopathology. To assess offspring psychopathology, parent-report items from the Diagnostic Interview for Children and Adolescents (DICA; Herjanic and Reich, 1982) and the Child SSAGA (C-SSAGA-P; Kuperman et al., 2001) were also incorporated. Offspring completed either the child (ages 11–14) or adolescent (ages 15+) version of the SSAGA, also adapted for telephone administration.
