To second Nick Rule's post, it would be great if someone had a solution
for this problem.
I am attaching my design matrix. I can set up the following t contrast
zeros(1,24) 0 0 1 -1 (thus testing within subject factor stim1>stim2)
but I cannot set up
zeros(1,24) 1 -1 0 0 (between subject factor grp1>grp2)
the answer always is "invalid contrast"
(I am using flexible factorial, three factors, with "subject" as first
factor, group as second factor, stimulus as third factor, and testing for
main effect of the three factors).
I tried using Full factorial method but the full factorial method does not
treat subject as repeated measure.
Fatima Husain
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