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Full-Text Articles in Education
A Monte Carlo Study Investigating The Influence Of Item Discrimination, Category Intersection Parameters, And Differential Item Functioning In Polytomous Items, Carol Jenetha Thurman
A Monte Carlo Study Investigating The Influence Of Item Discrimination, Category Intersection Parameters, And Differential Item Functioning In Polytomous Items, Carol Jenetha Thurman
Educational Policy Studies Dissertations
The increased use of polytomous item formats has led assessment developers to pay greater attention to the detection of differential item functioning (DIF) in these items. DIF occurs when an item performs differently for two contrasting groups of respondents (e.g., males versus females) after controlling for differences in the abilities of the groups. Determining whether the difference in performance on an item between two demographic groups is due to between group differences in ability or some form of unfairness in the item is a more complex task for a polytomous item, because of its many score categories, than for a …
A Monte Carlo Study Investigating Missing Data, Differential Item Functioning, And Effect Size, Phyllis Lorena Garrett
A Monte Carlo Study Investigating Missing Data, Differential Item Functioning, And Effect Size, Phyllis Lorena Garrett
Educational Policy Studies Dissertations
ABSTRACT A MONTE CARLO STUDY INVESTIGATING MISSING DATA, DIFFERENTIAL ITEM FUNCTIONING, AND EFFECT SIZE by Phyllis Garrett The use of polytomous items in assessments has increased over the years, and as a result, the validity of these assessments has been a concern. Differential item functioning (DIF) and missing data are two factors that may adversely affect assessment validity. Both factors have been studied separately, but DIF and missing data are likely to occur simultaneously in real assessment situations. This study investigated the Type I error and power of several DIF detection methods and methods of handling missing data for polytomous …