Psychometric Characteristics of Millon Clinical Multiaxial Inventory-III

Document Type : Research Paper

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Abstract

The aim of this study was to determine the psychometric characteristics of Millon Clinical Multiaxial Inventory. The research method was descriptive in which 774 participants (311 patients, 463 normals) were selected through purposeful and simple random sampling, respectively. For gathering data, Millon clinical multiaxial inventory was utilized. Analysis of data revealed that reliability of this inventory via test-retest were 0.611-0.793 in patients and 0.795-0.972 in normals. Reliability using chronbach’s alpha were 0.64-0.89. Positive prediction power for personality scales (0.13-0.47), for clinical scales (0.33-0.78), and negative prediction power for inventory (0.91-0.99), and total discrimination power (0.77-0.97) were found. In factor analyzing through principal factors and varimax rotation, 9 factors with eigenvalue more than 1 were found. They included: emotional distress, self-referring thoughts/paranoid projection, drug abuse, alcoholism, lack of emotional control/inhibition problems, rumination, sociability, trauma, passivity. On the basis of findings, it can be said that Millon clinical Multiaxial Inventory-III gas sufficient reliability and validity to be used among people with psychological disorders.

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