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- W2146996803 abstract "The goals of this study were threefold: (1) to provide a comparative analysis of five different item analysis indices using both IRT and non-IRT indices; (2) to describe the characteristics of flagged items; and (3) to investigate the appropriateness of logistic regression as an item analysis technique for further studies. The performance of five item analysis indices was examined in this study; p-value, point-biserial correlation, Rasch b parameter, Rasch χ 2 fit and χ 2 from the logistic regression model. A factor analysis indicated that the first factor was a difficulty factor and included the Rasch b and p-value indices, whereas the second factor represented the discrimination power of an item and consisted of the Rasch χ 2 fit, χ 2 from the logistic regression and the point-biserial correlation. There was a tendency for difficult items to exhibit more unusual response patterns. The χ 2 from the logistic regression fit was found to be an appropriate index when a researcher is attempting to detect items that function differentially and when the subject pool consists of varying ability groups." @default.
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- W2146996803 date "1994-03-01" @default.
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- W2146996803 title "A comparative item analysis study of a language testing instrument" @default.
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- W2146996803 doi "https://doi.org/10.1177/026553229401100102" @default.
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