This study examined the psychometric properties of self-rated symptoms of oppositional defiant disorder (ODD) and conduct disorder (CD). We analyzed symptom ratings from a clinical outpatient sample of 658 adolescents aged 11;0-17;11 years diagnosed with ODD/CD and/or attention-deficit hyperactivity disorder. In two steps, we examined the factor structure of ODD models and an additional CD symptom dimension using confirmatory factor analysis (CFA) and exploratory structural equation modeling…