Differential Item Functioning in Educational Testing
Differential item functioning (DIF) analysis is the central statistical tool for evaluating the fairness of test items in education. An item shows DIF when examinees of equal ability but different group membership — for example by gender, race/ethnicity, or language background — have unequal probabilities of answering it correctly. By conditioning on ability before comparing groups, DIF analysis separates genuine item bias from real group differences in proficiency, and flags items for expert review before they affect high-stakes decisions.
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Vyanzo
- Holland, P. W., & Wainer, H. (Eds.). (1993). Differential Item Functioning. Lawrence Erlbaum Associates. ISBN: 9780805809725
- Dorans, N. J., & Holland, P. W. (1993). DIF detection and description: Mantel-Haenszel and standardization. In P. W. Holland & H. Wainer (Eds.), Differential Item Functioning (pp. 35–66). Lawrence Erlbaum Associates. ISBN: 9780805809725
Jinsi ya kunukuu ukurasa huu
ScholarGate. (2026, June 22). Differential Item Functioning Analysis for Test Fairness in Education. ScholarGate. https://scholargate.app/sw/education/differential-item-functioning-education
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- Differential Distractor FunctioningEducation↔ linganisha
- Kufanya Kazi Tofauti kwa Vipengele (DIF)Saikometriki↔ linganisha
- Nadharia ya Itikio la Kipengee (IRT)Saikometriki↔ linganisha
- Standardized Test AnalysisEducation↔ linganisha
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