Multiple Group Item Response Theory Alignment Helpers for 'lavaan' and 'mirt'
Runs alignment optimizer
AlignLV: Multiple Group Item Response Theory Alignment Helpers for 'la...
Multiple-Group Factor Analysis Alignment from mirt or lavaan
Prepare lavaan estimates for alignment
Prepare mirt estimates for alignment
Estimate lavaan models using aligned parameter estimates
Estimate mirt models using aligned parameter estimates
Pipe operator
Simplicity function for alignment
Stack estimates for optimization
Transform lavaan estimates using aligned estimates of latent mean an...
Transform mirt estimates using aligned estimates of latent mean and ...
Allows for multiple group item response theory alignment a la 'Mplus' to be applied to lists of single-group models estimated in 'lavaan' or 'mirt'. Allows item sets that are overlapping but not identical, facilitating alignment in secondary data analysis where not all items may be shared across assessments.