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pcmdata
2012 Nov 08
0
mirt vs. eRm vs. ltm vs. winsteps
Dear R-List,
I tried to fit a partial credit model using the "pcmdat" from eRm-package comparing the results of mirt, eRm, ltm and winsteps.
The results where quite different, though. I cannot figure out what went wrong and I do not know which result I can rely on.
This is what I did in R
library(mirt)
#load(file="u3.RData")
mirt<-mirt(as.data....