Package: irtoys
Type: Package
Title: A Collection of Functions Related to Item Response Theory (IRT)
Version: 0.2.2
Date: 2022-05-11
Authors@R: c(person("Ivailo", "Partchev", email = "partchev@gmail.com", role = c("aut","cre")), 
  person("Gunter", "Maris", email = "Gunter.Maris@act.org", role = "aut"),
  person("Tamaki", "Hattori", role = "ctb"))
Maintainer: Ivailo Partchev <partchev@gmail.com>
Description: A collection of functions useful in learning and practicing IRT,
    which can be combined into larger programs. Provides basic CTT analysis,
    a simple common interface to the estimation of item
    parameters in IRT models for binary responses with three different programs
    (ICL, BILOG-MG, and ltm), ability estimation (MLE, BME, EAP, WLE, plausible 
    values), item and person fit statistics, scaling methods (MM, MS, Stocking-Lord,
    and the complete Hebaera method), and a rich array of parametric and 
    non-parametric (kernel) plots. Estimates and plots Haberman's interaction model
    when all items are dichotomously scored.
LazyLoad: yes
LazyData: yes
License: GPL (>= 2)
Depends: sm, ltm
Suggests: MASS, knitr, rmarkdown
Collate: 'ability.R' 'estimate.R' 'itemfit.R' 'nonpar.R' 'readin.R'
        'scale.R' 'tracelines.R' 'utils.R' 'irtoys-package.R'
        'interaction.R'
VignetteBuilder: knitr
RoxygenNote: 7.1.1
NeedsCompilation: yes
Packaged: 2022-05-12 05:29:30 UTC; partchev
Author: Ivailo Partchev [aut, cre],
  Gunter Maris [aut],
  Tamaki Hattori [ctb]
Repository: CRAN
Date/Publication: 2022-05-12 09:50:02 UTC
Built: R 4.6.0; x86_64-apple-darwin20; 2026-04-25 18:57:35 UTC; unix
Archs: irtoys.so.dSYM
