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catIrt

An R Package for Simulating IRT-Based Computerized Adaptive Tests

The catIrt package contains functions designed to simulate data that conform to basic unidimensional IRT models along with Post-Hoc CAT simulations of those models given various item selection methods, ability estimation methods, and termination criteria.

Within an R session, type (to install a binary package from CRAN)

install.packages("catIrt")

or (to install the most current source package from github)

if(length(find.package("devtools", quiet = TRUE)) == 0)
  install.packages("devtools")
devtools::install_github("swnydick/catIrt")

The first two lines of the second code block simply installs the devtools package if R cannot find its location. The devtools package contains the install_github function and is needed to easily install packages from github.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.