# How to interpret an interaction effect in SPSS output for a repeated measures anova with between and within group factors?

I have conducted a repeated measures ANOVA, with 2 factors:

• One between factor (Ex_control: exercise intervention versus control)
• One within factor (time: pre/post intervention).

### Questions

• Should I first refer to the table labelled within-subject effect and specifically the box labelled time*Ex_control?
• Does this table show whether or not there was a significant between or within group change as a result of the intervention?
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The line labelled time*Ex_control will tell you whether there is a statistically significant time by group interaction.