DFIT: Differential Functioning of Items and Tests

A set of functions to perform Raju, van der Linden and Fleer's (1995, doi:10.1177/014662169501900405) Differential Functioning of Items and Tests (DFIT) analyses. It includes functions to use the Monte Carlo Item Parameter Replication approach (Oshima, Raju, & Nanda, 2006, doi:10.1111/j. 1745-3984.2006.00001.x) for obtaining the associated statistical significance tests cut-off points. They may also be used for a priori and post-hoc power calculations (Cervantes, 2017, doi:10.18637/jss.v076.i05).

Version: 1.0-3
Imports: simex, mvtnorm, ggplot2
Published: 2017-01-06
Author: Victor H. Cervantes
Maintainer: Victor H. Cervantes <vhcervantesb at unal.edu.co>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
Copyright: Instituto Colombiano para la Evaluacion de la Educacion - ICFES; Victor H. Cervantes
NeedsCompilation: no
Citation: DFIT citation info
Materials: README NEWS
In views: Psychometrics
CRAN checks: DFIT results


Reference manual: DFIT.pdf
Package source: DFIT_1.0-3.tar.gz
Windows binaries: r-devel: DFIT_1.0-3.zip, r-release: DFIT_1.0-3.zip, r-oldrel: DFIT_1.0-3.zip
OS X Mavericks binaries: r-release: DFIT_1.0-3.tgz, r-oldrel: DFIT_1.0-3.tgz
Old sources: DFIT archive


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