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A Bayesian Method for the Detection of Item Preknowledge in CAT. Law School Admission Council Computerized Testing Report. LSAC Research Report Series.
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McLeod, Lori D.; Lewis, Charles; Thissen, David. – 1999
With the increased use of computerized adaptive testing, which allows for continuous testing, new concerns about test security have evolved, one being the assurance that items in an item pool are safeguarded from theft. In this paper, the risk of score inflation and procedures to detect test takers using item preknowledge are explored. When test…
Descriptors: Ability, Adaptive Testing, Bayesian Statistics, College Entrance Examinations