Utilizes the 'lme4' and 'optimx' packages (previously the optim() function from 'stats') to estimate (generalized) linear mixed models (GLMM) with factor structures using a profile likelihood approach, as outlined in Jeon and Rabe-Hesketh (2012) <doi:10.3102/1076998611417628> and Rockwood and Jeon (2019) <doi:10.1080/00273171.2018.1516541>. Factor analysis and item response models can be extended to allow for an arbitrary number of nested and crossed random effects, making it useful for multilevel and cross-classified models.
|Author||Minjeong Jeon [aut], Nicholas Rockwood [aut, cre]|
|Maintainer||Nicholas Rockwood <email@example.com>|
|License||GPL (>= 2)|
|Package repository||View on CRAN|
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