Both the Utrecht Coping Power Program (UCPP) and to care as usual (CU) intervention group or condition showed comparable outcomes compared with the healthy control (HC) group. Both interventions have potential preventive effects when it comes to the delinquency outcomes of these disruptive behavior disorder (DBD) diagnosed children. Delinquent behavior and substance use are detrimental to the individuals involved and to society. Prevention early in life should have priority because damage to both society and individuals can be effectively minimized. This study assessed whether the UCPP intervention, a treatment variant of the preventive Coping Power Program (CPP), applied to a group of children with DBD 8 to 13 years of age would induce preventive effects on substance use and delinquency in adolescence. Two groups of children with DBD were compared, with one group receiving UCPP intervention and the other group receiving CU intervention. The study was designed to determine the long-term prevention effects of the UCPP on substance use and delinquent behavior. Tables, references