irtplay: An R Package for Online Item Calibration, Scoring, Evaluation of Model Fit, and Useful Functions for Unidimensional IRT
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The R package irtplay provides practical tools for unidimensional item response theory (IRT) models that conveniently enable users to conduct many analyses related to IRT. For example, the irtplay includes functions for calibrating online items, scoring test-takers’ proficiencies, evaluating IRT model-data fit, and importing item and/or proficiency parameter estimates from the output of popular IRT software. In addition, the irtplay package supports mixed-item formats consisting of dichotomous and polytomous items.
2018 ◽
Vol 43
(2)
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pp. 172-173
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2017 ◽
Vol 41
(7)
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pp. 512-529
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2019 ◽
Vol 45
(3)
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pp. 339-368
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2020 ◽
Vol 29
(4)
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pp. 1030-1048
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2017 ◽
Vol 78
(3)
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pp. 384-408
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2019 ◽
Vol 23
(3)
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pp. 457-486
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