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Tatarinova, Galiya; Neamah, Nour Raheem; Mohammed, Aisha; Hassan, Aalaa Yaseen; Obaid, Ali Abdulridha; Ismail, Ismail Abdulwahhab; Maabreh, Hatem Ghaleb; Afif, Al Khateeb Nashaat Sultan; Viktorovna, Shvedova Irina – International Journal of Language Testing, 2023
Unidimensionality is an important assumption of measurement but it is violated very often. Most of the time, tests are deliberately constructed to be multidimensional to cover all aspects of the intended construct. In such situations, the application of unidimensional item response theory (IRT) models is not justifieddue to poor model fit and…
Descriptors: Item Response Theory, Test Items, Language Tests, Correlation