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ERIC Number: EJ942262
Record Type: Journal
Publication Date: 2011-Oct
Pages: 23
Abstractor: As Provided
Reference Count: 19
ISBN: N/A
ISSN: ISSN-0146-6216
Detection of Answer Copying Based on the Structure of a High-Stakes Test
Belov, Dmitry I.
Applied Psychological Measurement, v35 n7 p495-517 Oct 2011
This article presents the Variable Match Index (VM-Index), a new statistic for detecting answer copying. The power of the VM-Index relies on two-dimensional conditioning as well as the structure of the test. The asymptotic distribution of the VM-Index is analyzed by reduction to Poisson trials. A computational study comparing the VM-Index with the K-Index demonstrates that with the VM-Index, there is a large decrease in the Type II error rate and a smaller decrease in the Type I error rate. (Contains 16 figures and 1 table.)
SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: journals@sagepub.com; Web site: http://sagepub.com
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A