Hi Jeanette,
thanks a lot for your quick reply, so in the simpler case of one group of subjects and only one EV (reaction times (RTs) for example, I have to demean the values right?) and I want to compute a correlation between FA and RTs, I assume the design matrix would look like this:
Group EV(RTs)
1 0.270
1 0.330
1 0.150
1 -0.111
. -0.123
. .....
and I assume the contrast matrix would only be made by 1s, is that correct?
Thanks a lot!
best, Sandra
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