Abstract
Juvenile drug courts are a growing response to adolescent substance use, but a better understanding of modifiable risk factors is needed to improve program outcomes. Youth's mental health symptoms and peers' activities may impede the effectiveness of these "therapeutic" courts. In a unique longitudinal sample of 105 adolescents involved in juvenile drug court, we find elevated internalizing symptoms and deviant behavior of peers were each associated with increased risk of alcohol and marijuana use. Similar effects were seen on risk for condomless sex. Mental health and peer behaviors should be intervention targets for evidence-based juvenile drug court programming.