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This investigation attempted to examine the cognitive schemas of five distinct clusters that emerged from a cluster analysis of the personality disorder scales of the Millon Clinical Multiaxial Inventory-II (Millon, 1987). Specifically, the degree to which early maladaptive schemas, as measured by the Cognitive Schema Questionnaire-Short Form (Young, 1994), could correctly identify empirically derived patterns of personality disorders was examined. Between-cluster differences centered on five personality components and five schemas. Discriminant analyses revealed two significant functions composed of cognitive schemas, which correctly identified 61.2% of the entire sample in terms of cluster group membership. The total proportion of variance in the two significant functions associated with cluster group differences was 76.8%. Findings are discussed in relation to the domain theory of personality disorders posited by Millon and Davis (1996).

The Millon Adolescent Clinical Inventory (MACI) is a unique adolescent instrument that attempts to delineate between personality and acute symptoms. This study sought to explore typologies based on the Personality Pattern scales of the MACI in a sample of detained male juvenile offenders (N = 103). A Ward's method cluster analysis yielded a four-cluster solution, and each cluster was provided a clinically relevant label: (a) disruptive, antisocials; (b) agreeable, antisocials; (c) anxious, prosocials; and (d) reactive, depressives. The largest group consisted of the reactive depressives (n = 41). This suggests the importance of considering the role of internalizing problems as a conduit to delinquency in addition to antisocial personality. No interaction between cluster membership and offense history or race was found.