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Direct linkZebehazy, Kim T.; Zigmond, Naomi; Zimmerman, George J. – Journal of Visual Impairment & Blindness, 2012
Introduction: This study investigated differential item functioning (DIF) of test items on Pennsylvania's Alternate System of Assessment (PASA) for students with visual impairments and severe cognitive disabilities and what the reasons for the differences may be. Methods: The Wilcoxon signed ranks test was used to analyze differences in the scores…
Descriptors: Test Bias, Test Items, Alternative Assessment, Visual Impairments
