THE EFFECTS OF THE MODIFIER AND CORRECTION INDEXES ON MCMI-II PROFILES

Five modifier and correction indices are used in the Millon Clinical M ultiaxial Inventory-II (MCMI-II; Millon, 1987) to improve the sensitiv ity and specificity of its scales; however, profile analyses indicated that they had little effect on the profiles of 141 psychiatric inpati ents. The profiles generated within each MCMI-II section with and with out the indices had the same shape and generally showed no significant differences on the various scales. A simple procedure applied to the initial, uncorrected scores provided a good estimate of the final base rate (BR) scores that are obtained when the correction and modifier i ndices are applied. Examination of individual profiles indicated that the 3-point codetypes were usually the same regardless of whether or n ot the correction indices were applied. When there were changes, these usually involved changes in rank order; new scales were rarely introd uced in a code type. Although the utility of the indices for assessing test-taking attitude remains to be determined, these results argue ag ainst their use for modifying BR scores.