Construction of the Millon Personality Diagnostic Checklist-III-R and personality prototypes

Date of Award




Degree Name

Doctor of Philosophy (Ph.D.)



First Committee Member

Theodore Millon - Committee Chair


The Millon Personality Diagnostic Checklist-III-R, a clinicians' checklist assessing the thirteen DSM-III-R personality disorders, was constructed following a three stage validation process: theoretical-substantive, internal-structural and external-criterion (Loevinger, 1957). Four hundred sixty subjects diagnosed with a personality disorder by their clinicians were collected. The first validity stage was met as the MPDC-III-R descriptors were gathered from Millon's theory of personality (1969, 1981) and the DSM-III-R Axis II (APA, 1987). Based on the clinicians' MPDC-III-R endorsement patterns, the internal structure of the test was investigated through interscale correlations as well as correlations between the MPDC-III-R descriptors and its personality scales. External validity was measured through the concordance rate between the clinicians' diagnoses and the highest MPDC-III-R personality scale, correlations between the MPDC-III-R and MCMI-II personality scales, and mean profiles. The clinicians' endorsement patterns were then analyzed for the diagnostic efficiency values of each descriptor. These analyses employed a sample of 584 subjects grouped according to their primary Axis II diagnosis. The diagnostic efficiency of each descriptor, across all thirteen DSM-III-R Axis II personality disorders, was tested employing the measures of sensitivity, specificity, positive predictive power, and negative predictive power as well as two "new" measures: predictive prevalence ratio and comparative sensitivity (Millon, Bockian, Tringone, Antoni, & Green, 1989). The results from all the analyses support the recent movement to a prototypic typology acknowledging the probabilistic nature of the Axis II personality disorders and their diagnostic features. Following the analyses of the "descriptive definitions" of the personality disorders (PDs), several theories expounding a possible etiology for each PD were reviewed. Implications for the treatment of the PDs were discussed in relation to "personologic psychotherapy" (Millon, 1987d, in press) and the "four psychologies of psychoanalysis" (Pine, 1990).


Psychology, Clinical

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