A Canonical Correlation Analysis of the MMPI-2 and MCMI-III

The extant literature includes no canonical correlation analyses examining the relationship between the basic MMPI-2 scales and scales on the MCMI-III despite these measures representing two of the most commonly administered tests of personality. The following study was designed to remedy this gap in the literature for the purpose of fostering understanding of the underlying dimensions shared by these measures. Results revealed a statistically significant model based on ten pairs of discriminant functions. A very large effect size was observed in the present study, indicating that the MMPI-2 and MCMI-III shared 97.5% of their variance. Clinical and theoretical conceptualization of the discriminant functions was elaborated and future research suggested.