I am looking to conduct a study to address whether mindfulness has an effect on stroop inteference and spatial frames of reference. Therefore, I will conduct 2- two way Anova's. This will be 2(Mindfulness, Control) x 2(Pre, Post) Mixed anova as the groups are between subject but the measures will be repeated. How could I analyse this if parametric assumptions are not met?
Emre Uysal
As far as I know, the non-parametric equivalent of the repeated measure ANOVA test is the Friedman test. However, since the Friedman test doesn't allow for posthoc analysis and comparison between groups, I don't know of any alternatives of RM ANOVA for the 2-way test. If your data is not normally distributed, you can normalize the data and use the ANOVA test.
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