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The Discriminating Power of Items that Measure More than One Dimension.

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Reckase, Mark D. – 1986

The work presented in this paper defined conceptually the concepts of multidimensional discrimination and information, derived mathematical expressions for the concepts for a particular multidimensional item response theory (IRT) model, and applied the concepts to actual test data. Multidimensional discrimination was defined as a function of the…

Descriptors: College Entrance Examinations, Difficulty Level, Discriminant Analysis, Item Analysis