Test Analysis Modules R package TAM version 4.3-25 CRAN Task View: MissingData (https://CRAN.R-project.org/view=MissingData) CRAN Task View: Psychometrics (https://CRAN.R-project.org/view=Psychometrics) Includes marginal maximum likelihood estimation and joint maximum likelihood estimation for unidimensional and multidimensional item response models. The package functionality covers the Rasch model, 2PL model, 3PL model, generalized partial credit model, multi-faceted Rasch model, nominal item response model, structured latent class model, mixture distribution IRT models, and located latent class models. Latent regression models and plausible value imputation are also supported. For details see Adams, Wilson and Wang, 1997 <doi:10.1177/0146621697211001>, Adams, Wilson and Wu, 1997 <doi:10.3102/10769986022001047>, Formann, 1982 <doi:10.1002/bimj.4710240209>, Formann, 1992 <doi:10.1080/01621459.1992.10475229>. Software Depends: R (>= 2.15.1), CDM (>= 6.4-19) Imports: graphics, methods, Rcpp, stats, utils LinkingTo: Rcpp, RcppArmadillo Suggests: coda, GPArotation, grDevices, lattice, lavaan, MASS, miceadds, mvtnorm, plyr, psych, sfsmisc, splines, WrightMap Enhances: LSAmitR Alexander Robitzsch <robitzsch@ipn.uni-kiel.de> Comprehensive R Archive Network (CRAN) Alexander Robitzsch [aut, cre] (ORCID: <https://orcid.org/0000-0002-8226-3132>), Thomas Kiefer [aut], Margaret Wu [aut] GPL (>= 2) 2025-08-28 application/tgz https://CRAN.R-project.org/package=TAM doi:10.32614/CRAN.package.TAM