into high school (through 10th grade). The intensive intervention in grades 1–3 produced positive effects, reducing aggressive behaviors among children (by parent and teacher report), promoting positive peer interactions (by observer ratings) and higher social preference (by peer nominations) (CPPRG 2002). These effects waned during the middle school years (grades 6–8), when no intervention effects were apparent (CPPRG 2010a). However, later analyses showed positive intervention effects on adolescent outcomes, including delays in onset and reductions in the rate of juvenile arrests (CPPRG 2010b) and reduced rates of externalizing disorder for the highest-risk youth (CPPRG 2011). This study examines the possibility that the Fast Track intervention also had effects on risky sexual outcomes in adolescence.
