Fixed or random? On the reliability of mixed-effects models for a small number of levels in grouping variables
J. Oberpriller, M. de Souza Leite, M. Pichler
This study evaluates the impact of modeling grouping variables as fixed or random effects in mixed-effects models with small numbers of levels, finding that model choice affects statistical properties when ecological effects vary across levels.
bioRxiv · May 3, 2021Ecology