Novometric Analysis vs. MANOVA: MMPI Codetype, Gender, Setting, and the MacAndrew Alcoholism Scale

Paul R. Yarnold

Optimal Data Analysis, LLC

Prior research examined scores on the MacAndrew Alcoholism (MAC) scale for three Minnesota Multiphasic Personality Inventory (MMPI) codetypes within three samples: psychiatric inpatients and outpatients; medical outpatients referred for a psychiatric evaluation; and alcoholic inpatients. Analysis via factorial MANOVA revealed: “Mean MAC scores varied drastically as a function of MMPI codetype, gender, and the specific setting in which the MMPI was administered. These large variations in MAC scores suggest that the use of a single cutting score, typically a raw score of 24 or higher, may be inappropriate” (p. 39). These findings obtained by MANOVA are compared with the findings of novometric statistical analysis for this application.

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