Results indicate that personality disorders can be found in incarcerated youth at high rates. These findings further our understanding of chronic psychiatric illness and possibly criminal recidivism in this at-risk population. Addition of personality measures in the assessment of delinquents may assist in the development of more effective interventions. Furthermore, the supportive convergent validity of these findings in a population younger than 18 years may indicate a need to reassess the current rationale for the diagnosis of Axis II disorders.