ABSTRACT
The generalized linear latent and mixed model (GLLAMM) framework (Rabe-Hesketh et al., 2004a; Skrondal & Rabe-Hesketh, 2004) described in Rabe-Hesketh and Skrondal (Volume One, Chapter 30) unifies and extends a wide range of IRT models. The associated gllamm suite of programs performs estimation and prediction for all GLLAMMs. The software has been used in a large number of publications in more than 750 different journals indexed in the ISI Web of Science.
