Dear Korb,

Do you have only one group?

No, there are 3 groups for the 3 conditions. All will use the same app and will be measured on the same dependent variables but listen to different music.

Hello Korb,

In this situation you will want to conduct a single MANOVA with one IV (music type) and four DVs. Conducting multiple ANOVAs will inflate the probability of committing a Type I error.

*Based on your description, you don't have three independent variables. Rather, you have one independent variable with 3 levels.

Best,

Blaine

Thank you very much, this has already been very helpful!

Because of the one factor with three levels (music variation). This would be a one way MANOVA, correct?

How would I label that design? Is it a 3x1 between subject design?

Also, I'm not sure about the post-hoc test in case of significant results. I've read that it is advisable to use descriptive discriminant analysis instead of Tukey’s? What would be the correct (simple) choice?

Best,

Korb

Hi Korb,

Yes - this is a one-way MANOVA you are conducting with one between-group factor (i.e. music type).

Which post-hoc test you conduct will depend on what information you want to know. If you want to know which group means significantly differ on the DVs, then Tukey's test is what you want. If, on the other hand, you want to know which combination of variables (DVs in this case) best separate the three music groups - and to what degree - you would want descriptive discriminant analysis.

-Blaine