I want to contrast the correlation of two groups at the second level of
analysis.
After selecting multiple regression, I specified all scans for both groups.
Next I entered the continuous variable corresponding to each scan as a
covariate. Next I specified 2 covariates (dummy coded/inidicator variables)
corresponding to group membership. I thne estimated the model. However, i
cannot seem to specify contrasts for group. Can someone please point me in
the right direction (or to the right model)?
Thank you,
Jen
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