The R Package for "The Basics of Item Response Theory Using R"
Ability Estimation
The R Package for "The Basics of Item Response Theory Using R"
Group Invariance of Item Parameters
Item Characteristic Curve
Item Characteristic Curve Calculations
Item Characteristic Curve Fitting
Item Characteristic Curve Plot
Rasch Model Calibration
Test Characteristic Curve
Test Information Function
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.