Parents completed the Child Behavior Checklist (CBC; Achenbach & Rescorla, 2001) and these reports were used to assess adolescent rule breaking (e.g., “Breaks rules at home, school, or elsewhere.”) and aggressive (e.g., “Gets into many fights.”) behaviors in the last 6 months. Rule breaking was assessed with 17-items and aggression was assessed with 18 items. Response options included 0 (not true), 1 (somewhat or sometimes true), and 2 (very true or often true). Greater scores indicated more rule breaking or aggressive behavior. In this study, Cronbach's alpha was .81 for rule breaking and .85 for aggressive behavior. Research has shown the CBC to be reliable and to have convergent and discriminate validity (Nakamura, Ebesutani, Bernstein, & Chorpita, 2009).
