scholarly journals An item response theory analysis of the Community of Inquiry Scale

2015 ◽  
Vol 16 (2) ◽  
Author(s):  
Mehmet Barış Horzum ◽  
Gülden Kaya Uyanik
Keyword(s):  
Online Learning ◽  
Item Response Theory ◽  
Item Response ◽  
Community Of Inquiry ◽  
Item Analysis ◽  
Classical Test Theory ◽  
Test Theory ◽  
Validity And Reliability ◽  
Response Theory ◽  
Learning Programs

The aim of this study is to examine validity and reliability of Community of Inquiry Scale commonly used in online learning by the means of Item Response Theory. For this purpose, Community of Inquiry Scale version 14 is applied on 1,499 students of a distance education center’s online learning programs at a Turkish state university via internet. The collected data is analyzed by using a statistical software package. Research data is analyzed in three aspects, which are checking model assumptions, checking model-data fit and item analysis. Item and test features of the scale are examined by the means of Graded Response Theory. In order to use this model of IRT, after testing the assumptions out of the data gathered from 1,499 participants, data model compliance was examined. Following the affirmative results gathered from the examinations, all data is analyzed by using GRM. As a result of the study, the Community of Inquiry Scale adapted to Turkish by Horzum (in press) is found to be reliable and valid by the means of Classical Test Theory and Item Response Theory.

scholarly journals Comparison of item analysis results of Korean Medical Licensing Examination according to classical test theory and item response theory

2004 ◽  
Vol 1 ◽  
pp. 67 ◽  
Author(s):  
Eun Young Lim ◽  
Jang Hee Park ◽  
ll Kwon ◽  
Gue Lim Song ◽  
Sun Huh
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Item Analysis ◽  
Classical Test Theory ◽  
Test Theory ◽  
Response Theory ◽  
Computerized Adaptive Test ◽  
Classical Test ◽  
Difficulty Index ◽  
Ability Parameter

The results of the 64th and 65th Korean Medical Licensing Examination were analyzed according to the classical test theory and item response theory in order to know the possibility of applying item response theory to item analys and to suggest its applicability to computerized adaptive test. The correlation coefficiency of difficulty index, discriminating index and ability parameter between two kinds of analysis were got using computer programs such as Analyst 4.0, Bilog and Xcalibre. Correlation coefficiencies of difficulty index were equal to or more than 0.75; those of discriminating index were between - 0.023 and 0.753; those of ability parameter were equal to or more than 0.90. Those results suggested that the item analysis according to item response theory showed the comparable results with that according to classical test theory except discriminating index. Since the ability parameter is most widely used in the criteria-reference test, the high correlation between ability parameter and total score can provide the validity of computerized adaptive test utilizing item response theory.

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