DIF PCM analysis with panel figure output for item thresholds

Makes use of the eRm package function LRtest(). Outputs a panel of figures with item threshold locations and 95% confidence intervals.

Usage

RIdifThreshFigLR(dfin, dif.var)

Arguments

dfin

Dataframe with item data only

dif.var

DIF variable

Details

DIF variables need to be factors with the same length as the number of rows in the dataset.

sample usage: RIdifTableE(df, dif.age)