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Factor Analysis of the Dutch-Language Version of the MCMI–III

We analyzed the factor structure of the Dutch-language version of the MCMI–III (Millon, Millon, Davis, & Grossman, 2006) using exploratory factor analysis on data obtained from a heterogeneous White sample (n = 1,210). We identified 4 factors: General Maladjustment, Aggression/Social Deviance, Paranoid/Delusional Thinking, and Emotional Instability/Detachment. This structure was invariant across scale composition (linear dependent vs. independent scales), factor analytic method (principal factor vs. principal component solutions), and sample characteristics (gender ‘male-female’ and setting ‘clinical-forensic.’ Studies that have used previous MCMI (Millon, 1969/1983b) versions have also found 4 similar factors, whereas studies that have used the American version of the MCMI–III have only found 3 factors. However, differences between the Dutch and American version were completely determined by factor analytic decisions. The factor structure of the MCMI–III appeared to be cross-culturally invariant.