Dear SPM experts,
I would like to compute *group differences* (male x female) in *linear regression*.
Say, we want to find gender differences for the association between I.Q. with a particular con* image from the 1st level.
Is this possible or recommended using second-level SPM?
For instance, I see an option for "ANCOVA for PET and VBM (not 2nd level fMRI)" in the SPM manual.
Does it mean that ANCOVA with 2nd-level fMRI is not possible, or there is another alternative?
Any comments are really appreciated.
Best regards,
Jaime
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