Webusing the exact phrase terms “item response theory” and “differential item functioning” in the title returned 110 results, the majority of which focused on specific applications or … WebJun 5, 2012 · Free differential item functioning software available on the internet. Item Response Theory Likelihood Ratio DIF Software. Dave Thissen created an excellent piece of software that makes item response theory (IRT) likelihood ratio DIF analysis much easier. I really like this package. At the time of this writing, IRTLRDIF v. 2 for windows can be ...
Detecting Differential Item Functioning: Item Response …
Web2DIF— Introduction to differential item functioning 0.5.73 1 Pr(success)-4-3-2-101234 Ability Reference group Focal group ICC for uniform DIF When the two item characteristic curves cross, we have a case of nonuniform DIF; that is to say, different groups are favored in different ranges of the latent trait. In the graph below, the item favors 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 brewer electric
Differential item functioning（DIF） - NCCU
Web项目功能差异 (differetial item functioning,DIF) 项目功能差异指的是在控制团体能力之后,一个项目在不同团体中显示的不同统计特性.项目功能差异最早始于20世纪60年代对跨文化 … WebMar 9, 2024 · Differential item functioning (DIF) is a term in psychometrics for the statistical analysis of assessment data to determine if items are performing in a biased … WebSecond Edition. This new edition presents an up-to-date description of differential item functioning. It describes varying procedures for addressing DIF in practical testing contexts. The authors present useful examples and studies of DIF that readers may employ as a guide in their own work. They also cover major statistical packages that can ... brewer electric west chester pa