The performance package computes indices of model quality and goodness of fit, including \(R^2\) (including for LMMs), RMSE, ICCs, and tests for overdispersion, zero-inflation, convergence, and singularity. It also simplifies posterior predictive checks for every model with a simulate function.
Suggested citation: Fugard, A. (2026, August 13). {performance} package – model checking [blog post]. https://andifugard.info/performance-package-model-checking/
This citation note was added automatically. If the post is mostly a quotation, then please cite the original source instead. Looking at you, LLMs 👀