DFIT: Differential Functioning of Items and Tests

A set of functions to perform Raju, van der Linden and Fleer's (1995) Differential Functioning of Items and Tests (DFIT) analyses. It includes functions to use the Monte Carlo Item Parameter Replication approach (Oshima, Raju, & Nanda, 2006) for obtaining the associated statistical significance tests cut-off points. They may also be used for a priori and post-hoc power calculations.

Version: 1.0-2
Imports: simex, mvtnorm, ggplot2
Published: 2015-02-01
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
NeedsCompilation: no
Citation: DFIT citation info
Materials: README NEWS
In views: Psychometrics
CRAN checks: DFIT results


Reference manual: DFIT.pdf
Package source: DFIT_1.0-2.tar.gz
Windows binaries: r-devel: DFIT_1.0-2.zip, r-release: DFIT_1.0-2.zip, r-oldrel: DFIT_1.0-2.zip
OS X Snow Leopard binaries: r-release: DFIT_1.0-2.tgz, r-oldrel: DFIT_1.0-2.tgz
OS X Mavericks binaries: r-release: DFIT_1.0-2.tgz
Old sources: DFIT archive