|
KMID : 0381520070190020163
|
|
Korean Journal of Medical Education
2007 Volume.19 No. 2 p.163 ~ p.169
|
|
|
Testing Unidimensionality and Goodness-of-fitness for the Application of Item Response Theory to the Korean Medical Licensing Examination
|
|
Yim Mi-Kyoung
Huh Sun
|
|
|
Abstract
|
|
|
Purpose: In order to apply the item response theory to test results, the assumptions made about unidimensionality and item goodness-of-fitness should be tested before analysis. To know if the Korean Medical Licensing Examination results fulfill these assumptions, appropriate tests were done on these two features.
Methods: Three results(from three subjects) of the Korean Medical Licensing Examination, done in January 2004, were converted into 1, 0 data. The Holland and Rosenbaum Method(HRMH) and DETECT were used to test unidimensionality. The Winsteps was used to test goodness-of-fitness according to the Rasch model.
Results: Unidimensionality was rejected by HRMH but accepted by DETECT. With the Rasch model, 2 out of 550 items were inadequate. Each 137, 73 and 455 examinees out of 3,881 were inadequate in three subjects of 126, 400 and 24 items.
Conclusion: The above results suggest that DETECT is desirable for testing unidimensionality of high-stakes tests with more than 100 items. According to the Rasch model, the Korean Medical Licensing Examination fulfills the goodness-of-fitness to be analyzed according to the item response theory.
|
|
|
KEYWORD
|
|
|
Item response theory, Unidimensionality, Goodness-of-fitness, Korean Medical Licensing Examination
|
|
|
FullTexts / Linksout information
|
|
  
|
|
|
Listed journal information
|
|
 
|
|