Hello,

My study design:
* 3 groups of treatment (between subjects).
* Each group underwent 2 separate sessions (Pre and Post treatment).
* Each session contains two conditions ("Baseline" block and "Neurofeedback" block).

1. Subjects effects:

Let's say that the groups' names are: Treat_1, Treat_2, No_treat. 
Is this the correct way to test for main effect of No_treat (assuming I'm analyzing all subjects)?
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2. Between conditions contrasts:

I want to test if the difference between two "Post" conditions (the one-sided contrast: "Post Baseline - "Post Neurofeedback") is greater than the difference between two "Pre" conditions (the one-sided contrast: "Pre Baseline" - "Pre Neurofeedback").
Is there a straightforward way to do it?

The only thing I could think of is:
Conditions order: "Pre Baseline", "Pre Neurofeedback", "Post Baseline", "Post Neurofeedback".

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which I guess regresses out the "Pre" conditions altogether (i.e. tests for differences in "Post" conditions given any differences in "Pre" conditions).

(I've added the conditions as instructed here in the forum, assigning pre and post conditions separately to each session in "Setup", so that each session would contain both pre and post conditions, but "duration" and "onset" for each condition are defined only in the relevant places according to the respective sessions).

** Illustration Attached

Thank you in advance,
Avihay