Extract random effect variances from lme4 mer model object

Question

I have a mer object that has fixed and random effects. How do I extract the variance estimates for the random effects? Here is a simplified version of my question.

Answer 1

This package is useful for things like this (https://easystats.github.io/insight/reference/index.html)

library("insight")

get_variance_random(study) #Where study is your fit mixed model