Assessment of Regression Models Performance R package performance version 0.17.1 CRAN Task View: MixedModels (https://CRAN.R-project.org/view=MixedModels) Utilities for computing measures to assess model quality, which are not directly provided by R's 'base' or 'stats' packages. These include e.g. measures like r-squared, intraclass correlation coefficient (Nakagawa, Johnson & Schielzeth (2017) <doi:10.1098/rsif.2017.0213>), root mean squared error or functions to check models for overdispersion, singularity or zero-inflation and more. Functions apply to a large variety of regression models, including generalized linear models, mixed effects models and Bayesian models. References: Lüdecke et al. (2021) <doi:10.21105/joss.03139>. Software Depends: R (>= 4.0) Imports: bayestestR (>= 0.18.1), insight (>= 1.5.1), datawizard (>= 1.3.1), stats, methods, utils Suggests: AER, afex, BayesFactor, bayesplot, betareg, bigutilsr, blavaan, boot, brms, car, carData, CompQuadForm, correlation (>= 0.8.8), cplm, curl, dagitty, dbscan, DHARMa (>= 0.4.7), discovr, estimatr, fixest, flextable, forecast, ftExtra, gamm4, ggdag, glmmTMB (>= 1.1.12), GPArotation, graphics, Hmisc, httr2, ICS, ICSOutlier, ISLR, ivreg, lavaan, lme4, lmtest, loo, MASS, Matrix, mclogit, mclust, metadat, metafor, mgcv, mlogit, modelbased (>= 0.12.0), multimode, nestedLogit, nlme, nnet, nonnest2, ordinal, parallel, parameters (>= 0.28.0), patchwork, pscl, psych, psychTools, quantreg, qqplotr (>= 0.0.6), randomForest, RcppEigen, reformulas, rempsyc, rmarkdown, rstanarm, rstantools, sandwich, see (>= 0.13.0), survey, survival, testthat (>= 3.2.1), tweedie, VGAM, withr (>= 3.0.0) Daniel Lüdecke <officialeasystats@gmail.com> Comprehensive R Archive Network (CRAN) Daniel Lüdecke [aut, cre] (ORCID: <https://orcid.org/0000-0002-8895-3206>), Dominique Makowski [aut, ctb] (ORCID: <https://orcid.org/0000-0001-5375-9967>), Mattan S. Ben-Shachar [aut, ctb] (ORCID: <https://orcid.org/0000-0002-4287-4801>), Indrajeet Patil [aut, ctb] (ORCID: <https://orcid.org/0000-0003-1995-6531>), Philip Waggoner [aut, ctb] (ORCID: <https://orcid.org/0000-0002-7825-7573>), Brenton M. Wiernik [aut, ctb] (ORCID: <https://orcid.org/0000-0001-9560-6336>), Rémi Thériault [aut, ctb] (ORCID: <https://orcid.org/0000-0003-4315-6788>), Vincent Arel-Bundock [ctb] (ORCID: <https://orcid.org/0000-0003-2042-7063>), Martin Jullum [rev], gjo11 [rev], Etienne Bacher [ctb] (ORCID: <https://orcid.org/0000-0002-9271-5075>), Joseph Luchman [ctb] (ORCID: <https://orcid.org/0000-0002-8886-9717>) GPL-3 2026-06-30 application/tgz https://CRAN.R-project.org/package=performance doi:10.32614/CRAN.package.performance en-US