Dear SPMers
I have a very basic question in hypotesis testing.
I have a group of patients with 2 condition for each patient.
A) before treatment
B) after treatment.
For each patient I also have a psichiatric test :s
I want to measure is the effect of the treatment positivly corelated with
the test.
I am using a condition and covariate effect and use the following
2 contrasts:
condition1 condition2 score
1 -1 1
- 1 1 1
Is my contrast O.K?
What fit should I use for the covariant subject, none or condition ?
Yoram
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