DIFFERENTIAL ITEM FUNCTIONING PADA TES MULTIDIMENSI
Ali Ridho,
2014 | Disertasi |The presence of differential item functioning (DIF) to an item assumed unidimensional often attributed to the assumption of multidimensionality. Therefore, it’s interested to prove whether multidimensionality elicited items to be DIF between focal and reference group in tes Potensi Akademik (scholastic aptitude) Seleksi Penerimaan Mahasiswa Baru Perguruan Tinggi Agama Islam Negeri (PA SPMB-PTAIN). This study aimed at: (1) evaluate items of PA SPMB-PTAIN that contained DIF based on gender (female – male) and graduated (MAN – SMAN, MS); (2) evaluate the effect of multidimensionality to DIF; and (3) evaluate general psychometric characteristics of items that contain DIF. Analyzing to data response (n = 14000 for FM; n = 10000 for MS), the result showed that: (1) 9 items of analogy, analytic, arithmetic and geometry components were significantly contained multidimensional DIF favored Male; 7 items of arithmetic and comparative components contained multidimensional DIF favored Female; 5 items of analogy, logic, and arithmetic components contained multidimensional DIF favored student who graduated from SMAN; (2) the multidimensionality differences between focal and reference group did not elicit items to be DIF; (3) detected items as multidimensional DIF have sensitivity different of discrimination between focal and reference group. Keyword: multidimensionality, item response theory, DIF, female – male, MAN – SMAN, scholastic aptitude.
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