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.
| Version: | 0.2.2 |
| Depends: | sm, ltm |
| Suggests: | MASS, knitr, rmarkdown |
| Published: | 2022-05-12 |
| DOI: | 10.32614/CRAN.package.irtoys |
| Author: | Ivailo Partchev [aut, cre], Gunter Maris [aut], Tamaki Hattori [ctb] |
| Maintainer: | Ivailo Partchev <partchev at gmail.com> |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| NeedsCompilation: | yes |
| Materials: | NEWS |
| In views: | Psychometrics |
| CRAN checks: | irtoys results |
| Reference manual: | irtoys.pdf |
| Vignettes: |
Round about irtoys |
| Package source: | irtoys_0.2.2.tar.gz |
| Windows binaries: | r-devel: irtoys_0.2.2.zip, r-release: irtoys_0.2.2.zip, r-oldrel: irtoys_0.2.2.zip |
| macOS binaries: | r-devel (arm64): irtoys_0.2.2.tgz, r-release (arm64): irtoys_0.2.2.tgz, r-oldrel (arm64): irtoys_0.2.2.tgz, r-devel (x86_64): irtoys_0.2.2.tgz, r-release (x86_64): irtoys_0.2.2.tgz, r-oldrel (x86_64): irtoys_0.2.2.tgz |
| Old sources: | irtoys archive |
| Reverse depends: | subscore |
| Reverse imports: | irtGUI, PerFit, PsyControl, shinyIRT |
| Reverse suggests: | catIrt, PLmixed |
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