Dear SPMers
I just started to use this flexible factorial model, building some designs according to the pdf from Glascher and Gitelman.
I tried to build the model, but I am not able to figure out how to build the correct contrasts for my questions. IN fact, I attached 2 designs, so perhaps someone can suggest which one is the most appropriated to answer my questions.
I have 33 subjects
Group1: 7
group2:6
group3:11
group4:9
3 conditions
I wanted to see the main effect of groups and try to see which areas one group activates more than the others (G1> G2+G3+G4).
I appreciate any help!!
clarissa
|