Specify Within-Subjects Factors

Click the Within effects button on the GLM Quick Specs Dialog - Quick tab or the GLM Analysis Wizard Extended Options - Quick tab to display the Specify Within-Subjects Factors dialog box.

Element Name Description
No. of levels, Factor Name To specify a repeated measures (within-subjects)factor, enter the number of levels for the factor in the No. of levels field and a label for that factor in the Factor Name field. Statistica interprets the variables in the dependent variable list as levels of the repeated measures factors. Thus, the number of dependent variables must be a multiple (1, or greater) of the product of the levels for all repeated measures factors. If there are more (twice or more times as many) dependent variables than levels for the repeated measures factors, then adjacent variables in the dependent variable list will be interpreted as multiple dependent measures in a repeated measures MANOVA.
OK Click the OK button to return to the GLM Quick Specs Dialog - Quick tab or the GLM Analysis Wizard Extended Options - Quick tab after specifying the repeated measures factor(s).
Cancel Click the Cancel button to return to the GLM Quick Specs Dialog - Quick tab or the GLM Analysis Wizard Extended Options - Quick tab any changes made are disregarded.
Custom within design Click the Custom within design button to display the GLM Effects for Within Design dialog box. Note that, unlike in the between-group design, the exclusion of some within subject effects from the full factorial within subject design does not change the results for those effects left in the model; thus, this option is mostly useful when you want to produce less-cluttered results spreadsheets for complex within-subject designs involving many factors. See the Introductory Overview for details concerning the computations involved in within-subject (repeated measures) designs.

For further information, including examples, please see Specifying more than one repeated measures factor, Multivariate repeated measures designs and General ANOVA/MANOVA and GLM Notes - Specifying within-subjects univariate and multivariate designs.