This section provides an overview of a likelihood-based approach to general linear mixed models. This approach simplifies and unifies many common statistical analyses, including those involving ...

When some model effects are random (that is, assumed to be sampled from a normal population of effects), you can specify these effects in the RANDOM statement in order to compute the expected values ...

In those analyses, researchers will face any number of analytical decisions, including whether to use fixed or random effects models to control for variables that don’t change over time. Let’s ...