repsd: Root Expected Proportion Squared Difference for Detecting DIF

Root Expected Proportion Squared Difference (REPSD) is a nonparametric differential item functioning (DIF) method that (a) allows practitioners to explore for DIF related to small, fine-grained focal groups of examinees, and (b) compares the focal group directly to the composite group that will be used to develop the reported test score scale. Using your provided response matrix with a column that identifies focal group membership, this package provides the REPSD values, a simulated null distribution of possible REPSD values, and the simulated p-values identifying items possibly displaying DIF without requiring enormous sample sizes.

Version: 1.0.1
Depends: R (≥ 3.5.0), progress
Suggests: colorDF, testthat (≥ 3.0.0)
Published: 2023-04-18
DOI: 10.32614/CRAN.package.repsd
Author: Anne Corrine Huggins-Manley [aut], Anthony William Raborn ORCID iD [aut, cre]
Maintainer: Anthony William Raborn <anthony.w.raborn at>
License: MIT + file LICENSE
NeedsCompilation: no
Materials: README NEWS
CRAN checks: repsd results


Reference manual: repsd.pdf


Package source: repsd_1.0.1.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): repsd_1.0.1.tgz, r-oldrel (arm64): repsd_1.0.1.tgz, r-release (x86_64): repsd_1.0.1.tgz, r-oldrel (x86_64): repsd_1.0.1.tgz
Old sources: repsd archive


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