Comparison of the MMPI and the MMPI-2 for a Sample of Peace Officers

Peace officers ( N = 166) completed the MMPI and the MMPI-2 in one sitting. Results showed an overall concordance of 78% for the two tests when "normal," high-point, and 2-point code types were grouped together and compared. A subset of "well-defined" profiles produced a concordance rate of 90%. Comparison of profile characteristics showed that half of the subjects produced the same high-point code type, one third produced the same 2-point code type, 70% produced normal profiles on both tests, and all MMPI and MMPI-2 scales were highly correlated. These figures are highly similar to those found previously for two administrations of the MMPI. When the MMPI was compared to the MMPI-2 scored on original norms, two scales were found to differ significantly: Men and women both scored lower on Scale D (Depression) of the revised test; on Scale Mf (Masculinity-Femininity) of the MMPI-2, women scored higher and men scored lower.