A Study on the Procedure of Computerized Adaptive Testing Development
Hui Bai · Zhongguo kaoshi · 2012
Computerized Adaptive Testing (CAT) is a new method that item bank is based on response theory (IRT), computer automatically selects items according to the ability of each examinee, and ultimately estimate precise ability of each examinee . The option of CAT’s item differs from person to person with a highly targeted, which estimates the ability of examinees by fewer subjects with a good accuracy. CAT is good, but can’t blindly used. From design to publish, generally go through four stages: feasibility and applicability studies, item bank development, CAT algorithm and parameters, publish and maintenance. The effectiveness of each stage of the CAT is essential.