The authors examined the convergent and discriminant validity of selected Minnesota Multiphasic Personality Inventory—Adolescent (MMPI–A) content scales, including Anxiety, Depression, Health Concerns, Alienation, Anger, Conduct Problems, and Social Discomfort. Sixty-two adolescent psychiatric inpatients completed the MMPI–A and a battery of self-report measures of constructs similar to those measured by the content scales. Evidence for convergent and discriminant validity was generally strong, although the Anxiety and Depression content scales did not discriminate well between these 2 constructs. This finding is discussed in terms of L. A. Clark and D. Watson's (1991) tripartite model of anxiety and depression. Overall, findings support the validity and potential utility of the content scales.