Dear SPM experts,
I have 3 groups in my experiment, and I would like to see the effect of a condition on each group separately.
To do so, I run a one sample t test for each group separately, with a contrast vector = 1. Is this correct?
Also, I run a one way Anova where I specify the contrast vectors for each group as the following:
Group 1 : 1 0 0
Group 2 : 0 1 0
Group 3 : 0 0 1
Is this correct?
I don't find the same results for this two analyses though. Are the differences only emerging from a difference a variances? Is a method more valid than the other?
Thank you so much in advance,
Best regards
Caroline
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