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Henning, Grant – Language Testing, 1988
Violations of item unidimensionality on language tests produced distorted estimates of person ability, and violations of person unidimensionality produced distorted estimates of item difficulty. The Bejar Method was sensitive to such distortions. (Author)
Descriptors: Construct Validity, Content Validity, Difficulty Level, Item Analysis

Perkins, Kyle; Miller, Leah D. – Language Testing, 1984
Describes a study which submitted data from a multiple-choice English as a second language reading comprehension test to classical test theory item analysis and latent trait measurement. The purpose was to identify weak items and to compare the number of weak items indicated by the two different approaches. (SED)
Descriptors: English (Second Language), Language Tests, Latent Trait Theory, Reading Comprehension