IPR            Shows the working of the funcions in IPR.R that relate to the Item Parameter Replication Monte Carlo procedure
IRTSE          Shows the working of the functions in IRTSE.R that relate to asymptotic covariance of IRT item estimates
MantelHaenszel Shows the working of the functions in MantelHaenszel.R that relate to the MH when an underlying IRT model is assumed to hold
NCDIF          Shows the working of the functions in NCDIF.R that relate to the DFIT indices
RajuAreas      Shows the working of the functions in RajuAreas that calculate Raju's Signed and Unsigned Area Measures for DIF
powerExample   Shows how to calculate power for the NCDIF index with the functions in the DFIT package
