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A suite of psychometric analysis tools for research and operation, including: (1) computation of probability, information, and likelihood for the 3PL, GPCM, and GRM; (2) parameter estimation using joint or marginal likelihood estimation method; (3) simulation of computerized adaptive testing using builtin or customized algorithms; (4) assembly and simulation of multistage testing. The full documentation and tutorials are at <https://github.com/xluo11/xxIRT>.
Package details 


Author  Xiao Luo [aut, cre] 
Maintainer  Xiao Luo <xluo1986@gmail.com> 
License  GPL (>= 3) 
Version  2.1.2 
URL  https://github.com/xluo11/xxIRT 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

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