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IRTPRO
Item response theory (IRT) is used for scoring test takers, test score equating, test development, and computer-adaptive testing, to name a few of its purposes. For such applications, estimation of IRT models is necessary, and IRT model estimation in general requires complex estimation procedures. IRTPRO is a computer program that estimates the parameters of many popular IRT models and user-specified versions of IRT models that are suitable for categorical ordinal and nominal item response data (i.e., dichotomous, polytomous, and mixed responses). IRTPRO for Windows was developed in 2011. Compared to traditional IRT programs, IRTPRO provides an easy-to-use window user-interface for the implementation of popular IRT model estimation and is suitable not only for unidimensional but also for multidimensional IRT modeling with more recent estimation methods ...
- Assessment
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