2002 Fiscal Year Final Research Report Summary

Computerized Adaptive Testing System Based on Testlet Response Model

Research Project

Project/Area Number	12680236
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Educational technology
Research Institution	National Center for University Entrance Examinations (2001-2002) National Center Test for University Admissions (2000)
Principal Investigator	ISHIZUKA Tomoichi Research Division, Professor, 研究開発部, 教授 (00168238)
Co-Investigator(Kenkyū-buntansha)	NAKAUNE Naoko Research Division, Research Associate, 研究開発部, 助手 (00321563) MAYEKAWA Shin-ichi Tokyo Institute of Technologjy, Graduate School of Decision Science and Technology, Professor, 社会理工学研究科, 教授 (70190288)
Project Period (FY)	2000 – 2002
Keywords	computerized adaptive testing / item response theory / testlet response model
Research Abstract	A computerized adaptive testing system which is based on testlet response model was developed. The system was evaluated through two procedures : one using real examinee's response patterns, and the other using generated ability scores. Very high correlations between the true abilities and the estimated abilities were found through the first evaluation, and, through the latter procedure, it was confirmed that the system works fairy well.