Correspondence between students' scores on the Millon Clinical Multiaxial Inventory-II and Personality Diagnostic...

The relation between two measures of personality disorders was examined in a nonclinical sample of 113 college students (86 women, 27 men) who completed the Millon Clinical Multiaxial Inventory-II and the Personality Diagnostic Questionnaire-Revised. Raw scores for 10 of 11 corresponding scales on the two instruments were significantly correlated (median r = .49). Compared to Millon's inventory, the Personality Diagnostic Questionnaire-Revised designated more subjects as having eccentric personality disorders but fewer as having anxious personality disorders. The significant association between scores on the inventories suggests that they assess personality traits that vary continuously in nonclinical samples. However, the finding that they differ significantly in their assignment of clinical labels shows that they should not be used to diagnose personality disorders in nonclinical populations.