34 Three-Way ANOVA

A three-way ANOVA has three factors or independent variables. These can be all between-subjects, all within-subjects, or a combination of between- and within-subjects factors.

When we have a three-way ANOVA, there are three possible main effects (one for each factor, A, B, and C), three possible two-way interactions (A x B, B x C, and A x C), and one possible three-way interaction (A x B x C). In class, we shall go through an example of how to interpret a three-way interaction!