R resources

• The functionality of VisualDF has been baked into the MIRT package in R. Guide_to_IRT_Invariance_Tests_in_R: A tutorial on conducting invariance tests and computing effect sizes using the package MIRT in R. Updated 9.9.20. You can see a companion video that explains the process here.
• Psychometrics Lab member Richard Yentes has created an R package for identifying careless responding.  Check out his GitHub page for details.