Provides a collection of standard methods to detect differential item functioning among dichotomously scored items. Methods for uniform and non-uniform DIF, based on test-score or IRT methods, for comparing two or more than two groups of respondents, are available (Magis, Beland, Tuerlinckx and De Boeck,A General Framework and an R Package for the Detection of Dichotomous Differential Item Functioning, Behavior Research Methods, 42, 2010, 847-862 <doi:10.3758/BRM.42.3.847>).
| Version: | 5.1 |
| Depends: | R (≥ 3.0.0) |
| Imports: | mirt, ltm, lme4, deltaPlotR |
| Published: | 2020-05-13 |
| DOI: | 10.32614/CRAN.package.difR |
| Author: | David Magis (U Liege), Sebastien Beland (U Montreal) and Gilles Raiche (UQAM) |
| Maintainer: | David Magis <david.magis at gmail.com> |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| NeedsCompilation: | no |
| Citation: | difR citation info |
| Materials: | NEWS |
| In views: | Psychometrics |
| CRAN checks: | difR results [issues need fixing before 2025-05-13] |
| Reference manual: | difR.pdf |
| Package source: | difR_5.1.tar.gz |
| Windows binaries: | r-devel: difR_5.1.zip, r-release: difR_5.1.zip, r-oldrel: difR_5.1.zip |
| macOS binaries: | r-release (arm64): difR_5.1.tgz, r-oldrel (arm64): difR_5.1.tgz, r-release (x86_64): difR_5.1.tgz, r-oldrel (x86_64): difR_5.1.tgz |
| Old sources: | difR archive |
| Reverse imports: | DIFshiny, ShinyItemAnalysis, TestAnaAPP |
| Reverse suggests: | LSAmitR |
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