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Direct linkWyse, Adam E.; Mapuranga, Raymond – International Journal of Testing, 2009
Differential item functioning (DIF) analysis is a statistical technique used for ensuring the equity and fairness of educational assessments. This study formulates a new DIF analysis method using the information similarity index (ISI). ISI compares item information functions when data fits the Rasch model. Through simulations and an international…
Descriptors: Test Bias, Evaluation Methods, Test Items, Educational Assessment
Childs, Ruth A.; Jaciw, Andrew P.; Saunders, Kelsey – International Journal of Testing, 2007
Many approaches to standard-setting use item calibration and student score estimation results to structure panelists' tasks. However, this requires collecting standard-setting judgments after the item analysis results are available. The Scoring Guide Alignment approach collects standard-setting judgments during the scoring sessions from teachers…
Descriptors: Testing Programs, Scoring, Item Analysis, Test Items
