WebDetection of differential item functioning in large-scale state assessments: A study evaluating a two-stage approach. Educational and Psychological Measurement, 63(1), … http://www.ichacha.net/differential%20item%20functioning%20(dif).html
Statistical Software for Differential Item Functioning Analysis ...
Differential item functioning (DIF) is a statistical characteristic of an item that shows the extent to which the item might be measuring different abilities for members of separate subgroups. Average item scores for subgroups having the same overall score on the test are compared to determine … See more DIF refers to differences in the functioning of items across groups, oftentimes demographic, which are matched on the latent trait or more generally the attribute being measured by the items or test. It is important to note … See more Uniform DIF is the simplest type of DIF where the magnitude of conditional dependency is relatively invariant across the latent trait continuum (θ). The item of interest consistently gives one group an advantage across all levels of ability θ. Within an item … See more Below are common statistical programs capable of performing the procedures discussed herein. By clicking on list of statistical packages, you will be directed to a comprehensive list of open source, public domain, freeware, and proprietary statistical software. … See more Mantel-Haenszel A common procedure for detecting DIF is the Mantel-Haenszel (MH) approach. The MH procedure is a chi-squared contingency table based … See more Sample size The first consideration pertains to issues of sample size, specifically with regard to the reference and … See more • Measurement invariance See more WebMar 19, 2008 · Abstract. Differential item functioning (DIF) occurs when items on a test or questionnaire have different measurement properties for one group of people versus another, irrespective of group-mean differences on the construct. Methods for testing DIF require matching members of different groups on an estimate of the construct. dewitt 4\\u0027x600\\u0027 ultra web geo ground cover
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WebMay 17, 2024 · As a class of discrete latent variable models, cognitive diagnostic models have been widely researched in education, psychology, and many other disciplines. Detecting and eliminating differential item functioning (DIF) items from cognitive diagnostic tests is of great importance for test fairness and validity. A Monte Carlo study … WebAug 4, 2010 · Differential item functioning (DIF) methods can be used to determine whether different subgroups respond differently to particular items within a health-related quality of life (HRQoL) subscale, after allowing for overall subgroup differences in that scale. This article reviews issues that arise when testing for DIF in HRQoL instruments. We … WebJan 1, 2013 · Differential Item Functioning (DIF) is a key technique for analyzing survey and test data. Moreover, DIF should be conducted via Rasch measurement. Whereas … dewitt academia watch