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Detecting Items That Function Differently for Two- and Four-Year College Students
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Thelk, Amy – Research & Practice in Assessment, 2008
Differential Item Functioning (DIF) occurs when there is a greater probability of solving an item based on group membership after controlling for ability. Following administration of a 50-item scientific and quantitative reasoning exam to 286 two-year and 1174 four-year students, items were evaluated for DIF. Two-year students performed…
Descriptors: Test Bias, Probability, Test Items, Student Evaluation