Confidence Screening Detector: A New Method for Detecting Test Collusion

Test collusion (TC) is a form of cheating in which, examinees operate in groups to alter normal item responses. TC is becoming increasingly common, especially within high-stakes, large-scale examinations. However, research on TC detection methods remains scarce. The present article proposes a new al...

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Bibliographic Details
Published inApplied psychological measurement Vol. 47; no. 3; pp. 237 - 252
Main Authors Xu, Yongze, Cui, Ying, Wang, Xinyi, Huang, Meiwei, Luo, Fang
Format Journal Article
LanguageEnglish
Published Los Angeles, CA SAGE Publications 01.05.2023
Subjects
test collusion
hypothesis testing
plagiarism cheating detection
test security
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Summary:Test collusion (TC) is a form of cheating in which, examinees operate in groups to alter normal item responses. TC is becoming increasingly common, especially within high-stakes, large-scale examinations. However, research on TC detection methods remains scarce. The present article proposes a new algorithm for TC detection, inspired by variable selection within high-dimensional statistical analysis. The algorithm relies only on item responses and supports different response similarity indices. Simulation and practical studies were conducted to (1) compare the performance of the new algorithm against the recently developed clique detector approach, and (2) verify the performance of the new algorithm in a large-scale test setting.
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ISSN:0146-6216
1552-3497
DOI:10.1177/01466216231165299