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Download full textWang, Shudong; Jiao, Hong; He, Wei – Online Submission, 2011
The ability estimation procedure is one of the most important components in a computerized adaptive testing (CAT) system. Currently, all CATs that provide K-12 student scores are based on the item response theory (IRT) model(s); while such application directly violates the assumption of independent sample of a person in IRT models because ability…
Descriptors: Accuracy, Computation, Computer Assisted Testing, Adaptive Testing
He, Wei; Reckase, Mark – Online Submission, 2008
Test security has been a concern for computerized adaptive tests (CAT) due to the nature of continuous testing. This concern becomes unprecedentedly severe with increasingly easy access to the World-Wide-Web where some examinees post on the internet their recollections of items they are administered, leaving future examinees with opportunities to…
Descriptors: Adaptive Testing, Computer Assisted Testing, Test Items, Item Banks
