Estimation of the Rasch Model for Multistage Tests R package tmt version 0.3.6-4 Provides conditional maximum likelihood (CML) item parameter estimation of both sequential and cumulative deterministic multistage designs (Zwitser & Maris, 2015, <doi:10.1007/s11336-013-9369-6>) and probabilistic sequential and cumulative multistage designs (Steinfeld & Robitzsch, 2024, <doi:10.1007/s41237-024-00228-3>). Supports CML item parameter estimation of conventional linear designs and additional functions for the likelihood ratio test (Andersen, 1973, <doi:10.1007/BF02291180>) as well as functions for simulating various types of multistage designs. Software Depends: R (>= 4.4.0) Imports: parallel, ggplot2, Rcpp (>= 1.0.0), stats, rlang LinkingTo: Rcpp Suggests: roxygen2, eRm, knitr, prettydoc, psychotools, testthat, rmarkdown Jan Steinfeld <jan.d.steinfeld@gmail.com> Comprehensive R Archive Network (CRAN) Jan Steinfeld [cre, aut] (ORCID: <https://orcid.org/0000-0001-9853-8260>), Alexander Robitzsch [aut] (ORCID: <https://orcid.org/0000-0002-8226-3132>) GPL-3 2025-12-07 application/tgz https://CRAN.R-project.org/package=tmt doi:10.32614/CRAN.package.tmt en-US