CopyDetect: Computing Statistical Indices to Detect Answer Copying on Multiple-Choice Tests

CopyDetect contains several IRT and non-IRT based statistical indices proposed in the literature for detecting answer copying on multiple-choice examinations. CopyDetect includes the indices that have been shown as effective and reliable based on the simulation studies. CopyDetect provides results for the Omega index (Wollack, 1996), Generalized Binomial Test (van der Linden & Sotaridona, 2006), K index (Holland, 1996), K1 and K2 indices (Sotaridona & Meijer, 2002), and S1 and S2 indices (Sotaridona & Meijer, 2003).

Version: 1.1
Depends: irtoys
Published: 2014-06-12
Author: Cengiz Zopluoglu
Maintainer: Cengiz Zopluoglu <c.zopluoglu at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
Materials: NEWS
In views: Psychometrics
CRAN checks: CopyDetect results


Reference manual: CopyDetect.pdf
Package source: CopyDetect_1.1.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X Snow Leopard binaries: r-release: CopyDetect_1.1.tgz, r-oldrel: CopyDetect_1.1.tgz
OS X Mavericks binaries: r-release: CopyDetect_1.1.tgz
Old sources: CopyDetect archive