ERIC Number: EJ942262
Record Type: Journal
Publication Date: 2011-Oct
Pages: 23
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0146-6216
EISSN: N/A
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.)
Descriptors: Cheating, Journal Articles, Computation, Comparative Analysis, Evaluation Methods, High Stakes Tests, Multiple Choice Tests, Identification, Monte Carlo Methods, Item Response Theory, College Admission, College Students
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
Grant or Contract Numbers: N/A