Much of the original SSAGA was retained at reassessment, with additional items from the Family History Assessment Module (FHAM; Rice, Reich, Bucholz, Neuman, Fishman et al., 1995) included to assess biological co-parent history of conduct problems, adult antisocial behavior, and alcohol and other substance use or disorder. To assess rearing history and offspring psychopathology, parent-report items adapted from the Diagnostic Interview for Children and Adolescents (DICA; Herjanic & Reich, 1982) and the Child SSAGA (C-SSAGA-P; Kuperman, Schlosser, Kramer, JBucholz, Hesselbrock et al., 2001) were also incorporated. In addition, twins with age-eligible offspring completed a brief self-report questionnaire (SRQ), which included assessments of offspring medical history, school and neighborhood characteristics, parenting behaviors, parent-child relationship quality, and partner conflict. Included with the SRQ was the parent report form of the Child Behavior Checklist for Ages 6–18 (CBCL; Achenbach, 2001).
