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Direct linkTao, Wei; Cao, Yi – Applied Measurement in Education, 2016
Current procedures for equating number-correct scores using traditional item response theory (IRT) methods assume local independence. However, when tests are constructed using testlets, one concern is the violation of the local item independence assumption. The testlet response theory (TRT) model is one way to accommodate local item dependence.…
Descriptors: Item Response Theory, Equated Scores, Test Format, Models
