Item Response Theory Modeling and Scoring for Judgment Data

Psychometric analysis and scoring of judgment data using polytomous Item-Response Theory (IRT) models, as described in Myszkowski and Storme (2018) . A convenience function is used to automatically compare and select models, as well as to present a variety of model-based statistics. Plotting functions are used to present category curves, as well as information, reliability and standard error functions.


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install.packages("jrt")

1.0.0 by Nils Myszkowski, a month ago


Browse source code at https://github.com/cran/jrt


Authors: Nils Myszkowski [aut, cre]


Documentation:   PDF Manual  


GPL-3 license


Imports mirt, psych, irr, methods, utils, stats, dplyr, tidyr, ggplot2, ggsci

Depends on directlabels

Suggests knitr, rmarkdown


See at CRAN