How post-hoc test should I perform for two way repeated measures ANOVA for 3 groups?

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Béatrice Marianne Ewalds-Kvist

If you have a significant main effect or interaction effect in the overall (omnibus= analysis then SPSS give you automatically post-hoc test answers. It is likely to be Tukey' HSD test you get (HSD= honestly significant difference)

Jos Feys

See the " two-way repeated measures ANOVA" section (with R): https://www.datanovia.com/en/lessons/repeated-measures-anova-in-r/ or the "Two Factor Design with Repeated Measures on One Factor" section: http://www.personal.psu.edu/mar36/stat_461/repeated_measures/repeated_measures.html In attachment a SAS program, with the Tukey tests.