GLM Repeated Measures Model
Specify Model. A full factorial model contains all factor main effects, all covariate main effects, and all factor-by-factor interactions. It does not contain covariate interactions. Select Custom to specify only a subset of interactions or to specify factor-by-covariate interactions. You must indicate all of the terms to be included in the model.
Between-Subjects. The between-subjects factors and covariates are listed.
Model. The model depends on the nature of your data. After selecting Custom, you can select the within-subjects effects and interactions and the between-subjects effects and interactions that are of interest in your analysis.
Sum of squares. The method of calculating the sums of squares for the between-subjects model. For balanced or unbalanced between-subjects models with no missing cells, the Type III sum-of-squares method is the most commonly used.
Obtaining Models for GLM Repeated Measures
This feature requires the Advanced Statistics option.
- From the menus choose:
- Define your factors.
- In the Repeated Measures dialog box, click Model.
- In the Repeated Measures Model dialog box, select Custom.
- Select one or more within-subjects factors.
- Select a method for building the terms and then move the within-subjects factors.
- Repeat these steps for within-subjects factors and between-subjects factors and covariates until you have the model you want. The interaction of each between-subjects term with each within-subjects term is automatically included in the model. That is, if W is a within-subjects factor in the model and B is a between-subjects factor in the model, W*B will be in the model.
Optionally, you can change the type of sum of squares.
Do not use the same term more than once in the model.