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مجلة جامعة القدس المفتوحة للبحوث الإنسانية والاجتماعية
This study aimed to investigate differential functioning items and distractors of a criterion referenced science test for sixth grade. The test is constructed according to item response theory (IRT). To achieve this goal, the researcher designed a test constitutes of (75) multiple-choice items. The test was applied at the end of the school year (20152016-), on a sample of (520) 6th grade students, in Jeddah, Saudi Arabia, (418) of which are from public schools, and (102) of which are fromdoi:10.33977/0507-000-044-028 fatcat:l3y6m7ms5vgcvp3hstzcegsox4