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Download full textSotaridona, Leonardo S.; Meijer, Rob R. – 2001
This study investigated statistical properties of the K-index (Holland, 1996) that can be used to detect copying behavior on tests. A simulation study was conducted to investigate the applicability of the K-index for small, medium, and large datasets. In addition, the Type I error rate and the detection rate of this index were compared with the…
Descriptors: Cheating, Sample Size, Simulation, Statistical Analysis
Peer reviewedSotaridona, Leonardo S.; Meijer, Rob R. – Journal of Educational Measurement, 2002
Studied the statistical properties of the K-index (P. Holland, 1996) that can be used to detect copying behavior on a test through a simulation study of the use of the K-statistic with small, medium, and large datasets. Also compared the Type I error rate and detection rate of this index with those of the copying index (J. Wollack, 1997).…
Descriptors: Cheating, Identification, Plagiarism, Sample Size
Peer reviewedSotaridona, Leonardo S.; Meijer, Rob R. – Journal of Educational Measurement, 2003
Proposed two new indices to detect answer copying on a multiple choice test and conducted a simulation study to investigate the usefulness of both indexes. Discusses conditions under which the proposed indexes can be useful. (SLD)
Descriptors: Cheating, Multiple Choice Tests, Simulation, Testing Problems
Direct linkSotaridona, Leonardo S.; van der Linden, Wim J.; Meijer, Rob R. – Applied Psychological Measurement, 2006
A statistical test for detecting answer copying on multiple-choice tests based on Cohen's kappa is proposed. The test is free of any assumptions on the response processes of the examinees suspected of copying and having served as the source, except for the usual assumption that these processes are probabilistic. Because the asymptotic null and…
Descriptors: Cheating, Test Items, Simulation, Statistical Analysis
Sotaridona, Leonardo S.; Meijer, Rob R. – 2001
Two new indices to detect answer copying on a multiple-choice test, S(1) and S(2) (subscripts), are proposed. The S(1) index is similar to the K-index (P. Holland, 1996) and the K-overscore(2), (K2) index (L. Sotaridona and R. Meijer, in press), but the distribution of the number of matching incorrect answers of the source (examinee s) and the…
Descriptors: Cheating, Multiple Choice Tests, Responses, Sample Size
