Dear SPM users,
I'd like to ask some advice how to add covariates, both within-subjects and
between-subjects, in a paired t test in SPM2 or SPM5. Here is my problem:
The study involves two seperate tasks: A and B. Some subjects take A after
B, and others take B after A. We know for sure that subjects perform
differently in these two tasks. Now, we want to do a paired t test with
within-subject covariates from the order of tasks and also the behavior
variables in A and B. In addition, we also want to consider gender and
patient control covariates in our paired t test.
Best regards and Thanks,
Peisi Yan
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