The R Package for "The Basics of Item Response Theory Using R"

R functions for "The Basics of Item Response Theory Using R" by Frank B. Baker and Seock-Ho Kim (Springer, 2017, ISBN-13: 978-3-319-54204-1) including iccplot(), icccal(), icc(), iccfit(), groupinv(), tcc(), ability(), tif(), and rasch(). For example, iccplot() plots an item characteristic curve under the two-parameter logistic model.


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install.packages("birtr")

1.0.0 by Seock-Ho Kim, 2 years ago


Browse source code at https://github.com/cran/birtr


Authors: Seock-Ho Kim [aut, cre]


Documentation:   PDF Manual  


Task views: Psychometric Models and Methods


GPL (>= 2) license


Suggests testthat


See at CRAN