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Oliveri, Maria Elena; Lawless, Rene; Robin, Frederic; Bridgeman, Brent – Applied Measurement in Education, 2018
We analyzed a pool of items from an admissions test for differential item functioning (DIF) for groups based on age, socioeconomic status, citizenship, or English language status using Mantel-Haenszel and item response theory. DIF items were systematically examined to identify its possible sources by item type, content, and wording. DIF was…
Descriptors: Test Bias, Comparative Analysis, Item Banks, Item Response Theory