The Millon Adolescent Clinical Inventory: Is it valid and reliable for Mexican American youth?

In this study, we examined the internal consistency reliability, construct-related validity, and mean base rate scores of the Millon Adolescent Clinical Inventory (MACI; Millon, Millon, & Davis, 1993) Personality and Clinical scales in a sample (N = 131) of juvenile offending, educationally at-risk, and substance-dependent Mexican American youth. Overall, the MACI scales demonstrated good reliability estimates. Using methods derived from contrast analysis (Westen & Rosenthal, 2003), the scales performed as would be expected based on predictions derived from Millon's (1969, 1981) theory. In addition, the scales differentiated in an expected fashion among the 3 groups. The results of this study provide preliminary support for the use of the MACI among Mexican Americans.