Linear mixed models - Part 1 - Background

This video is part of a brief lesson on linear mixed models. It was created as part of a statistics class for first-year psychology PhD students in 2024. For details, see https://saraemilyburke.com/stats/linear_mixed_models.html The slides used in videos 1 through 3 are available at https://saraemilyburke.com/stats/mixed_model_slides.pdf The code used in videos 4 and 5 is available at https://saraemilyburke.com/stats/mixed_model_demo.r This lesson assumes that you are already familiar with linear regression, including interactions in regression models, as described in the following three video series: https://saraemilyburke.com/stats/regression_conceptual_intro.html https://saraemilyburke.com/stats/regression_demos.html https://saraemilyburke.com/stats/regression_interactions.html