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Hello fellow SPMers I'm new to SPM, so this may be a very basic question. I tried searching the documentation and archives with no luck so far. I'm doing a group correlation analysis. So far, I've entered the relevant contrasts and vectors, received a design matrix and conducted the estimation step, which all seem to have went well. I now have an SPM.mat file. I'm pressing "RESULTS" , highlighting the SPM.mat file and pressing DONe. then I am entering a name for a t-contrast "pos corr major vs minor changes". then I am entering the number "1" in the dialog box for the contrast. when I press submit, and OK, I get a message that says "no valid contrast defined" Can anyone help? thanks jadzia -- Jadzia Anna Jagiellowicz Graduate Student Dept. of Psychology Stony Brook University Stony Brook, New York USA 11795-2500 Fax: (631) 632-7876 http://www.psychology.stonybrook.edu/aronlab-/