RM ANOVA question
I already knew how to do a RM ANOVA for two levels of a single factor. What I want to know how to do is a RM ANOVA when there are two factors each with 2 or more levels.
For example, if each participant in a study performed a hand-grip strength test before (pre) drinking coffee, and at three time points (p1, p2, and p3) after drinking coffee, this gives 4 levels for the factor Time. Now the same participants also were tested 4 times (pre, p1, p2, and p3) after drinking water (a placebo) on a different day. What I'd like to do is a 2X4 RM ANOVA where I have 2 levels for treatment (Coffee vs. Placebo), and 4 levels for Time (pre, p1, p2, p3).
My data table is already set up to conduct my analysis with all 8 dependent values for hand grip strength for each subject on a single row (with the 8 values in separate columns).
What I want to know how to do is to conduct the full 2x4 RM ANOVA in JASP. Many thanks!
Aaron
Comments
Hi Aaron,
Sorry about the long delay. This is similar to the analysis for the "Bugs" data set, discussed for instance in the Part II paper here: https://link.springer.com/article/10.3758/s13423-017-1323-7
I cannot see a gif/YouTube video on our website on repeated measures ANOVA -- I'll ask around.
Cheers
E.J.
Hi Aaron,
A gif to illustrate this procedure can be found here: https://jasp-stats.org/wp-content/uploads/2018/02/assumptionchecks_rep_meas.gif
An overview of our tutorials (blog posts, gifs, youtube videos) can be found here: https://jasp-stats.org/how-to-use-jasp/
Kind regards,
Johnny