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Regression Effects in Angoff Ratings: Examples from Credentialing Exams
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Wyse, Adam E. – Applied Measurement in Education, 2018
This article discusses regression effects that are commonly observed in Angoff ratings where panelists tend to think that hard items are easier than they are and easy items are more difficult than they are in comparison to estimated item difficulties. Analyses of data from two credentialing exams illustrate these regression effects and the…
Descriptors: Regression (Statistics), Test Items, Difficulty Level, Licensing Examinations (Professions)