catIRTtools

 

catIRTtools is an R Shiny application that helps researchers to run Computerized Adaptive Testing simulations & Item Response Theory Calibrations. It supports unidimensional dichotomous and polytomous IRT models, and most common ability estimation and item selection methods. 

 

Development Team

  • Eren Can Aybek

 

Try catIRTtools for free: 

https://shiny.eptlab.com/catirt/