Convergent and discriminant validity of the MCMI-II and MMPI personality disorder scales.

Abstract

MMPI) personality disorder scales was examined using multitrait-multimethod procedures and factor analyses. Effects of item overlap were also examined by conducting analyses using both overlapping and nonoverlapping scales. Eighty psychiatric inpatients, most of whom had an Axis II personality disorder, were administered the MCMI-II and MMPI. Convergent and discriminant validity of the scales was generally established. The MCMI-II Antisocial and Passive-Aggressive scales performed better than the original MCMI scales, whereas the Obsessive-Compulsive scales failed to reach significant convergence. Although item overlap did not have a general impact on validity, some scales demonstrated better validity in nonoverlapping form, whereas others performed best in overlapping form. The MCMI-II scales yielded a factor structure that closely matched Millon's dimensions of personality, whereas MMPI factors reflected the DSM-IH-R personality disorder clusters. Findings are discussed in terms of their relevance for future study.I am grateful to Leslie C. Morey for his assistance with the statistical analysis and to three anonymous reviewers for their helpful comments during the preparation of this article.

Diagnosing Personality Disorders: An Examination of the MMPI-2 and MCMI-II

“…Across studies comparing the MMPI and MCMI, reasonable levels of concurrent validity have been documented, with the exception of results on the Antisocial, Compulsive, and Paranoid scales (Dubro & Wetzler, 1989;McCann, 1989McCann, , 1991. The finding of the lack of the relationship between the scales for Antisocial PDO was consistent with previous findings (Dubro & Wetzler, 1989;Widiger & Sanderson, 1987) and was thought to be due in part to the differences in the theoretical and behavioral characteristics between the conceptualizations of the two disorders.…”

“…Of note was the failure of the Antisocial, Compulsive, and Paranoid scales to achieve "satisfactory" (p. 367) levels of convergence with their corresponding MCMI scales. When he performed a similar investigation employing the MCMI-I1 (McCann, 1991), convergent validity coefficients increased across the scales with the exception of the Narcissistic scale (Widiger & Corbitt, 1993). Widiger and Corbitt concluded that these results suggest that the MCMI-11 provides a "better measure of the DSM-111-R than was provided by the MCMI" (p. 189).…”

The MMPI/MMPI-2 personality disorder scales: Contemporary norms for adults and adolescents

“…Comparisons with the MCMI-11, the revision of the MCMI, revealed generally greater convergence than observed with the original MCMI (McCann, 1991). In particular, congruence between the MMPI and MCMI-I1 antisocial scales was increased with the separation of the original MCMI scale into two separate scales, one of which reflected sadistic personality and the other, antisocial personality.…”

Discriminative validity of the MacAndrew Alcoholism Scale with Cluster B personality disorders

“…The archival participant selection was accomplished by an exhaustive search of approximately 800 cases seen over a seven-year period. A number of previous studies have successfully utilized chart information to retrospectively rate patients for Axis II diagnostic criteria (Fyer, Frances, Sullivan, Hurt, & Clarkin, 1988;McCann 1991;McGlashan & Heinssen, 1989;Morey, 1985, Plakun, 1987Stone, 1989). The selection of clinic cases proceeded in three phases.…”