Evaluating Assessment via Item Response Theory Utilizing Information Function With R
Teck Kiang Tan
Abstract:Item and test information functions that measure the reliability of an assessment via Item response theory (IRT) are described in the paper for the practitioners. While the four parameters binary IRT models are frequently used, their relationship to the precision level is not commonly discussed. More notably, the benefits, limitations, and constraints of the information approach have not been fully examined systematically. On this basis, with useful and practical examples, the paper formally introduces the gra… Show more
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