I have 7 subjects and 3 conditions. I have used these intstructions to set up a
Tripled T-Test...
http://www.fmrib.ox.ac.uk/fsl/feat5/detail.html#higher
So the EVs looks the same as in the website example above, my question
concerns setting up Contrasts.
I copied their math in setting up the first 3 contrasts A-B, A-C, B-C and
created 3 other contrasts on my own (B-A, C-A, C-B). Is this correct?
EV1 EV2
A-B 2 1
A-C 1 2
B-C -1 1
B-A -2 0
C-A -1 -2
C-B 1 -1
Do I have the 3 bottom contrasts set up correctly? Additionally I would like to
find out where each of the conditions is greater than both of the other. So
where A is greater than B AND C. I assumed I could use the website's math in
creating these by saying A minus B minus C, etc etc for each condition. Here
is what I have come up with in my model...
EV1 EV2
A 2 2
B -2 0
C 0 -2
Is this correct? If not, how would I go about setting up a contrast that finds
where A, B, and C are each greater than the other 2 conditions. Thank you
very much in advance.
- Kevin Denny
Duke Brain Imaging & Analysis Center
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