Package: jrt
Title: Item Response Theory Modeling and Scoring for Judgment Data
Version: 1.2.0
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), methods, utils, stats, dplyr
        (>= 1.0.7), tidyr (>= 1.1.4), ggplot2 (>= 3.3.5), ggsci (>=
        2.9)
Suggests: knitr, rmarkdown
VignetteBuilder: knitr
Config/roxygen2/version: 8.0.0
NeedsCompilation: no
Packaged: 2026-06-10 22:18:56 UTC; nils
Author: Nils Myszkowski [aut, cre]
Maintainer: Nils Myszkowski <nilsmyszkowskiscience@gmail.com>
Repository: CRAN
Date/Publication: 2026-06-10 22:40:02 UTC
Built: R 4.5.3; ; 2026-07-01 05:22:31 UTC; windows
