Generate or Upload Item Parameters / Responses & Run CAT Simulations

Your results will be here after you submit your request.
Simulations may take time according to your dataset. 

            
          

        

      

      

        

          IRT Calibration
        

        

          

            
          

          

            

              

                Yen's Q3 Statistics for Local Independency
              

              

              

                You can download results below
              

              

                

                  
                    
                    Download Item Parameters
                  
                

                

                  
                    
                    Download Theta Estimates
                  
                

                

                  
                    
                    Download Plots
                  
                

              

            

          

        

      

      

        

          You can find item parameter and response sample files below.
        

        

          
This is a demo app. If you have any question please contact: erencan {at} aybek.net

        

        

          Item parameter sample file
        

        

          Response pattern sample file
        

      

      

        

          We do not keep any of the files and results on our servers.
        

      

      

        

          References
        

        

          
Chalmers, R.P. (2012). mirt: A multidimensional item response theory package for the R environment. Journal of Statistical Software, 48(6), 1-29. doi:10.18637/jss.v048.i06

        

        

          
Magis, D. & Raiche, G. (2012). Random generation of response 
          patterns under computerized adaptive testing with the R package 
          catR. Journal of Statistical Software, 48(8), 1-31. 
          doi:10.18637/jss.v048.i08

        

        

          
Magis, D. & Barrada, J.R. (2017). Computerized adaptive testing 
          with R: Recent updates of the package catR. Journal of Statistical 
          Software, Code Snippets, 76(1), 1-19. doi:10.18637/jss.v076.c01

        

        

          
Chang, W., Cheng, J., Allaire, J.J., Xie, Y., & McPherson, J. (2018). 
          shiny: Web application framework for R. R package version 1.2.0. 
          https://CRAN.R-project.org/package=shiny

        

        

          Citation
        

        

          
Aybek, E.C. (2021). catIRT tools: A "Shiny" application for item response theory calibration and computerized adaptive testing simulation. Journal of Applied Testing Technology, 22(1). 12-24.