jweese1441/DIFSIB: SIBTEST Suite of Procedures

The DIFSIB package can assess differential item, bundle or test functioning (DIF/DBF/DTF) in dichotomous and polytomous items using a nonparametric estimation and hypothesis test. The procedures contained within DIFSIB match examinees on total test score (a latent ability proxy). Nonuniform DIF, DBF, or DTF can be assessed too. The package also provides a user interface for practioners to easily assess DIF, DBF or DTF using the SIBTEST procedures.

install.packages("remotes")
remotes::install_github("jweese1441/DIFSIB")