It is important to highlight there are clear differences between our sample and the child sample analyzed in Dick et al., 2006. Our adolescent patients were selected from admissions to a university substance abuse treatment program. Such adolescents might reasonably differ from conduct-disordered adolescents selected from families with a high-density of alcohol dependence. Our sample may represent adolescents with greater severity of conduct disorder, may suffer a greater severity of substance use problems or might differ in ways that facilitated their entry to treatment (refractory illness, poor impulse-control, unstable home environment, comorbid illness, greater impairment from conduct and substance problems etc.).
