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Kaku Zakka, Nkechi P.M. Esomonu, Comfort Kwatambia Olamide. Development and Preliminary Validation of Difficulty Index, Discrimination and Distractor of Measurement and Evaluation Proficiency Test for Undergraduate Students. ajest [Internet]. 2026 Sep. 24 [cited 2026 Sep. 24];8(4):228-42. Available from: https://ajest.org/index.php/ajest/article/view/1036