psychTestRCAT is an R package for developing and administering adaptive ability tests under the framework of item response theory. Adaptive tests tailor their difficulty to each participant on the basis of their previous responses. This adaptive approach can make tests considerably more efficient, and allows one test to serve a wide range of abilities.

psychTestRCAT depends on psychTestR, an R package for constructing psychological testing interfaces.


if (!requireNamespace("devtools")) install.packages("devtools")