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Author

Joakim Wallmark

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Open access Sep 2026

Population Difficulty and Discrimination in Item Response Theory: A Complement to Traditional Item Parameters

Traditional Item Response Theory (IRT) parameters for item difficulty and discrimination often depend heavily on the specific assumptions and constraints of the chosen model. This study introduces and evaluates population difficulty and population discrimination as complementary metrics that generalize across dichoto...

Joakim Wallmark · 0 citations

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