Home | IRT Differential Item Functioning Tool
Visualize Differential Item Functioning
The IRT DIF Graphing Tool is an Excel spreadsheet designed to help you visualize and evaluate the presence of differential item functioning (DIF) based on item response theory (IRT). It is meant as a post-hoc tool for analysis that is done with other software, such as DFIT.
This website uses cookies to ensure you get the best experience on our website