PerFit: Person Fit

Several person-fit statistics (PFSs; Meijer and Sijtsma, 2001, <doi:10.1177/01466210122031957>) are offered. These statistics allow assessing whether individual response patterns to tests or questionnaires are (im)plausible given the other respondents in the sample or given a specified item response theory model. Some PFSs apply to dichotomous data, such as the likelihood-based PFSs (lz, lz*) and the group-based PFSs (personal biserial correlation, caution index, (normed) number of Guttman errors, agreement/disagreement/dependability statistics, U3, ZU3, NCI, Ht). PFSs suitable to polytomous data include extensions of lz, U3, and (normed) number of Guttman errors.

Version:	1.4.7
Depends:	ltm, mirt
Imports:	stats, graphics, fda, Hmisc, irtoys, MASS, Matrix
Published:	2025-04-02
DOI:	10.32614/CRAN.package.PerFit
Author:	Jorge N. Tendeiro [aut, cre]
Maintainer:	Jorge N. Tendeiro <tendeiro at hiroshima-u.ac.jp>
License:	GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation:	no
Citation:	PerFit citation info
Materials:	README
CRAN checks:	PerFit results

Documentation:

Reference manual:

PerFit.html , PerFit.pdf

Downloads:

Package source:	PerFit_1.4.7.tar.gz
Windows binaries:	r-devel: PerFit_1.4.7.zip, r-release: PerFit_1.4.7.zip, r-oldrel: PerFit_1.4.7.zip
macOS binaries:	r-release (arm64): PerFit_1.4.7.tgz, r-oldrel (arm64): PerFit_1.4.7.tgz, r-release (x86_64): PerFit_1.4.7.tgz, r-oldrel (x86_64): PerFit_1.4.7.tgz
Old sources:	PerFit archive

Reverse dependencies:

Reverse imports:

epmfd

Linking:

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