Convergent validity of the Youth Psychopathic Traits Inventory (YPI): association with the Psychopathy Checklist: Youth Version (PCL:YV).

This study investigates the relationship between the self-report Youth Psychopathic Traits Inventory (YPI) and the clinician-rated Psychopathy Checklist: Youth Version (PCL:YV). A representative sample of 92 girls and 70 boys, 12 to 20 years of age (mean age, 17 years), who received services at a clinic for adolescents with substance misuse problems, was… (More)