Testing Unidimensionality and Goodness-of-fitness for the Application of Item Response Theory to the Korean Medical Licensing Examination / 한국의학교육
Korean Journal of Medical Education
;
: 163-169, 2007.
Article
in Korean
| WPRIM
| ID: wpr-107048
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Licensure
/
Netherlands
Country/Region as subject:
Europa
Language:
Korean
Journal:
Korean Journal of Medical Education
Year:
2007
Type:
Article
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