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Dear FSL Experts, I have a question regarding my design matrix. I have two groups (G1, G2), one covariate of interest (CI), and three covariates of no interest (CNI). I am interested in within group correlations with my single covariate of interest and was wondering if the following contrasts were correct for the design matrix I have listed below. G1 G2 CIG1 CIG2 1st CNI(sex)G1 1st CNI(sex)G2 2nd CNIG1 2nd CNIG2 3rd CNIG1 3rd CNIG2 0 1 0 11 0 1 0 147 0 26.25 0 1 0 11 0 2 0 123 0 31.08 0 1 0 36 0 1 0 119 0 35.83 1 0 33 0 1 0 118 0 62.92 0 1 0 25 0 1 0 162 0 69.83 0 1 0 22 0 2 0 124 0 61.08 0 Contrast1: 0 0 1 0 0 0 0 0 0 0 (give me voxels that show a positive correlation with my covariate of interest in group 1) Contrast2: 0 0 -1 0 0 0 0 0 0 0 (give me voxels that show a negative correlation with my covariate of interest in group 1) Contrast3: 0 0 0 1 0 0 0 0 0 0 (give me voxels that show a positive correlation with my covariate of interest in group 2) Contrast4: 0 0 0 -1 0 0 0 0 0 0 (give me voxels that show a negative correlation with my covariate of interest in group 2) Cheers!