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KMID : 0381520040160020219
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Korean Journal of Medical Education
2004 Volume.16 No. 2 p.219 ~ p.226
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Usability of Extended-matching Type Items in the Korean Medical Licensing Examinations(2002, 2003)
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Yim Mi-Kyoung
Huh Sun
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Abstract
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Purpose: In 2002, extended-matching type(R-type) items were introduced to the Korean Medical Licensing Examination. To evaluate the usability of R-type items, the results of the Korean Medical Licensing Examination in 2002 and 2003 were analyzed based on item types and knowledge levels.
Methods: Item parameters, such as difficulty and discrimination indexes, were calculated using the classical test theory. The item parameters were compared across three item types and three knowledge levels.
Results: The values of R-type item parameters were higher than those of A- or K-type items. There was no significant difference in item parameters according to knowledge level, including recall, interpretation, and problem solving. The reliability of R-type items exceeded 0.99. With the R-type, an increasing number in correct answers was associated with a decreasing difficulty index.
Conclusion: The introduction of R-type items is favorable from the perspective of item parameters. However, an increase in the number of correct answers in pick ‘n´-type questions results in the items being more difficult to solve.
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KEYWORD
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Medical education, Classical test theory, Difficulty index, Discrimination index, Extended-matching type item
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