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KMID : 1139020060030010004
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Journal of Educational Evaluation for Health Professions
2006 Volume.3 No. 1 p.4 ~ p.0
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Estimation of an Examinee’s Ability in the Web-Based Computerized Adaptive Testing Program IRT-CAT
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Lee Yoon-Hwan
Park Jung-Ho
Park In-Yong
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Abstract
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We developed a program to estimate an examinee s ability in order to provide freely available access to a web-based computerized adaptive testing (CAT) program. We used PHP and Java Script as the program languages, PostgresSQL as the database management system on an Apache web server and Linux as the operating system. A system which allows for user input and searching within inputted items and creates tests was constructed. We performed an ability estimation on each test based on a Rasch model and 2- or 3-parametric logistic models. Our system provides an algorithm for a web-based CAT, replacing previous personal computer-based ones, and makes it possible to estimate an examinee’s ability immediately at the end of test.
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KEYWORD
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Item Response Theory, Computerized Adaptive Testing, Examinee’s Ability, Estimation
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