Dear SPMers,
I want to test the overall significance in my model with an F-test. The model contains a within-subject factor (timepoint: pre- and post-treatment) and a between-subject factor (group: patients and controls). I used the flexible factorial option in spm to define the 2nd level model with the following factors:
1. subject
2. group
3. timepoint
the design matrix with all maineffects has the rows
1 & 2 group effects
3 & 4 timepoint
5 - Inf subjects
How to define an overall F contrasts to test the overall effect?
Thanks in advance & best regards
Ben
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