Hi.
I want to compute the average across three conditions for each subject by removing any
differences between the conditions.
For two conditions, I understand the EVs would be
EV1 EV2
1 1
1 -1
would it not, and I compute the contrast (1,0) for the average across the two conditions
with any differences removed?
For three conditions, is it
EV1 EV2 (a) EV3 (b)
1 1 1
1 -1 0
1 0 -1
and then compute (1,0,0) since conditions A+B+C = a+b-a-b = 0, as per the tripled t-test
example?
I then plan to average this (1,0,0) contrast across subjects to get the mean across
condition with any differences between the conditions removed.
-Brad
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