LEM
LEM, an outstanding program by Jeroen Vermunt, handles both unconstrained LCA and constrained LCA (including ordinal variable, local dependence, and discrete latent trait models), as well as loglinear, latent trait, and other categorical data modeling methods. It also checks model identifiability, and provides asymptotic standard errors for parameter estimates. Researchers interested in local dependence LCA models will appreciate the ease with which such models are handled by LEM. Parameter estimate standard errors are supplied.
Link to download (free) the LEM program, manual, and examples. Contact information:
Dr. Jeroen Vermunt
Department of Methodology
Faculty of Social Sciences
Tilburg University
P.O. Box 90153 5000 LE Tilburg
THE NETHERLANDS