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This package performs bivariate composite likelihood and full information maximum likelihood estimation for unidimensional polytomous logit-normit (graded logistic) item response theory (IRT) models. It is also capable of simulating data under the model, and computing the limited information test statistic, M2.
# Development version from GitHub:
# install.packages("devtools")
devtools::install_github("falkcarl/pln")
# From CRAN:
install.packages("pln")
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