title: The effects of the modifier and correction indices on MCMI-II profiles.
abstract: Five modifier and correction indices are used in the Millon Clinical Multiaxial Inventory-II (MCMI-II; Millon, 1987) to improve the sensitivity and specificity of its scales; however, profile analyses indicated that they had little effect on the profiles of 141 psychiatric inpatients. The profiles generated within each MCMI-II section with and without 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 indices are applied. Examination of individual profiles indicated that the 3-point codetypes were usually the same regardless of whether or not the correction indices were applied. When there were changes, these usually involved changes in rank order; new scales were rarely introduced in a code type. Although the utility of the indices for assessing test-taking attitude remains to be determined, these results argue against their use for modifying BR scores.
authors.affiliation: Department of Psychology, Hamilton Psychiatric Hospital, Ontario, Canada.
authors.forename: H R
authors.initials: HR
authors.lastname: Miller
authors.forename: J O
authors.initials: JO
authors.lastname: Goldberg
authors.forename: D L
authors.initials: DL
authors.lastname: Streiner
mesh_terms: D000328:Adult; D005260:Female; D006760:Hospitalization; D006778:Hospitals, Psychiatric; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000145:classification / Q000175:diagnosis*; D010555:Personality Inventory / Q000706:statistics & numerical data*; D011594:Psychometrics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity