Dear SPM community,
I have an experimental design with three independent groups each receiving one of three different treatments. This is expected to decrease activity in group A and increase activity in group C, as compared to placebo (group B).
How can I incorporate this hypothesis in a single model on the second level? Would the solution be anything close to a design matrix like the following one:
-1 0 0
0 0 0
0 0 1
Many thanks in advance for all answers and hints!
Yoan
--
Yoan Mihov, Dipl.-Psych.
NEMO Research Group
Department of Psychiatry
University of Bonn
Sigmund-Freud-Str. 25
53105 Bonn
Germany
Tel.: +49 (0)228 287 11165
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