Factors Related to the Difficulty of College Scholastic Ability Test English Items
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This study has attempted to explore the factors related with the difficulty of the College Scholastic Ability Test (CSAT) English items. The test used for the present study was 2005 English section of CSAT, which was composed of 50 items. The subjects were 570,431 students who took 2005 CSAT English test. 16 independent variables were correlated with the proportion of the students’ correct responses (dependent variable) in 50 items. The findings support the previous study with regard to the nature of correlation between the item or text variables and proportion of the correct answers in the 2003 CSAT English test (Kyung-Ae Jin & Chung Park, 2004). Also, it was found that the 16 variables suggested as the factors related with the item difficulty in this study explain approximately 52% (R²= 0.519) of the variance of the proportion of the students’ correct responses in the 2005 CSAT English test. This indicates that the variables identified in the present study are rather explanatory in terms of predicting CSAT English item difficulty.
Abstract
This study has attempted to explore the factors related with the difficulty of the College Scholastic Ability Test (CSAT) English items. The test used for the present study was 2005 English section of CSAT, which was composed of 50 items. The subjects were 570,431 students who took 2005 CSAT English test. 16 independent variables were correlated with the proportion of the students’ correct responses (dependent variable) in 50 items. The findings support the previous study with regard to the nature of correlation between the item or text variables and proportion of the correct answers in the 2003 CSAT English test (Kyung-Ae Jin & Chung Park, 2004). Also, it was found that the 16 variables suggested as the factors related with the item difficulty in this study explain approximately 52% (R²= 0.519) of the variance of the proportion of the students’ correct responses in the 2005 CSAT English test. This indicates that the variables identified in the present study are rather explanatory in terms of predicting CSAT English item difficulty.
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