MCMI-II Item Weights: Their Lack of Effectiveness
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Millon Clinical Multiaxial Inventory II (MCMI-II; Millon, 1987) results from 134 patients were scored twice; with and without the item weights. The results showed that the correlations between the weighted and unweighted versions of the same scales were extremely high, exceeding .90 in all cases. Furthermore, weighting did not significantly reduce the correlations among the scales, either within each of the four syndrome/pattern categories of the MCMI-II, or between categories. It is concluded that item weighting reduces the access of the MCMI-II by clinicians, without increasing its psychometric properties.
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