Thurstonian IRT Models
Set up Correlation Matrices
Fit Thurstonian IRT models in lavaan
Fit Thurstonian IRT models in Mplus
Fit Thurstonian IRT models in Stan
Extract corrected goodness of fit statistics
Generate lavaan code for Thurstonian IRT models
Generate Mplus code for Thurstonian IRT models
Prepare data for Thurstonian IRT models fitted with lavaan or Mplus
Prepare data for Thurstonian IRT models fitted with Stan
Prepare data for Thurstonian IRT models
Predict trait scores of Thurstonian IRT models
Prepare blocks of items
Prepare blocks of items from a data frame
Simulate Thurstonian IRT data
The 'thurstonianIRT' package.
Fit Thurstonian Item Response Theory (IRT) models in R. This package supports fitting Thurstonian IRT models and its extensions using 'Stan', 'lavaan', or 'Mplus' for the model estimation. Functionality for extracting results, making predictions, and simulating data is provided as well. References: Brown & Maydeu-Olivares (2011) <doi:10.1177/0013164410375112>; Bürkner et al. (2019) <doi:10.1177/0013164419832063>.
Useful links