Package: jrt
Title: Item Response Theory Modeling and Scoring for Judgment Data
Version: 1.1.3
Authors@R: person("Nils", "Myszkowski",email = "nilsmyszkowskiscience@gmail.com",
                  role = c("aut", "cre"))
Description: Psychometric analysis and scoring of judgment data using polytomous Item-Response Theory (IRT) models, as described in Myszkowski and Storme (2019) <doi:10.1037/aca0000225> and Myszkowski (2021) <doi:10.1037/aca0000287>. A 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.
Depends: R (>= 3.5.0), directlabels (>= 2021.1.13)
License: GPL-3
Encoding: UTF-8
LazyData: true
Imports: mirt (>= 1.34), psych (>= 2.1.9), irr (>= 0.84.1), methods,
        utils, stats, dplyr (>= 1.0.7), tidyr (>= 1.1.4), ggplot2 (>=
        3.3.5), ggsci (>= 2.9)
RoxygenNote: 7.3.2
Suggests: knitr, rmarkdown
VignetteBuilder: knitr
NeedsCompilation: no
Packaged: 2025-07-31 06:56:19 UTC; nils
Author: Nils Myszkowski [aut, cre]
Maintainer: Nils Myszkowski <nilsmyszkowskiscience@gmail.com>
Repository: CRAN
Date/Publication: 2025-07-31 07:20:02 UTC
Built: R 4.4.3; ; 2026-01-31 06:29:43 UTC; windows
