Hi there
I have 2 questions:
1. I'm running a single group TBSS trying to correlate the DTI data with 3
behavioral tests scores for each subject. I have also one confounding
regressor which is age.
when i run randomise with all 3 test scores at the time in the same design I
get a significant result while if i run each test separately i don't get any
significant result in tbss_tfce_corrp files. is it reasonable, shouldn't it be the
other way around? can you think of anything i did wrong??
2. should i orthogonalise such a design?
my combined design(including all 3 test scores):
1 0 0 0
-1 0 0 0
0 1 0 0
0 -1 0 0
0 0 1 0
0 0 -1 0
my separate design for each test
1 0
-1 0
thanks
reut
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