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Full-Text Articles in Education
Improvements For Differential Functioning Of Items And Tests (Dfit): Investigating The Addition Of Reporting An Effect Size Measure And Power, Keith D. Wright
Improvements For Differential Functioning Of Items And Tests (Dfit): Investigating The Addition Of Reporting An Effect Size Measure And Power, Keith D. Wright
Educational Policy Studies Dissertations
Standardized testing has been part of the American educational system for decades. Controversy from the beginning has plagued standardized testing, is plaguing testing today, and will continue to be controversial. Given the current federal educational policies supporting increased standardized testing, psychometricians, educators and policy makers must seek ways to ensure that tests are not biased towards one group over another.
In measurement theory, if a test item behaves differently for two different groups of examinees, this test item is considered a differential functioning test item (DIF). Differential item functioning, often conceptualized in the context of item response theory (IRT) is …