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KMID : 0362120220440030104
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Journal of Technologic Dentistry
2022 Volume.44 No. 3 p.104 ~ p.110
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Analysis of the difficulty and discrimination of paper-based tests and computer-based tests according to item response theory: focusing on the National Dental Technician Examination
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Hwang Kyung-Sook
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Abstract
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Purpose: This study analyzes the difficulty and discrimination of the paper-based test (PBT) and the computer-based test (CBT) according to item response theory, focusing on the Na-tional Dental Technician Examination.
Methods: A mock test was conducted from September 15 to 23, 2020, and the final 179 (1 out of 180 absentees)people were the subjects of this study. Both frequency analysis and factor analysis were performed. The collected data were analyzed using IBM SPSS Statis-tics ver. 18.0 (IBM) and jMetrik programs. The significance level was set to 0.05.
Results: The difficulty of the mock test was more easily responded to in CBT. It was also predicted that the CBT could better measure the ability of test takers than the PBT could.
Conclusion: The difficulty, discrimination, and reliability of the questions were not affected by the examination method through the mock test. The feasibility of a future change to the CBT was confirmed by the National Dental Technician Examination.
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KEYWORD
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Computer based test, Difficulty, Discrimination, Item response theory, Paper based test
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