Dear all,
I am trying to set up a one-way within-subject ANOVA (8 subjects, each measured at 3 different levels). The SPM release note for release 4010 (http://www.fil.ion.ucl.ac.uk/spm/software/spm8/SPM8_Release_Notes_r4010.pdf) says that I have to 'enter all the scans for each subject and tell SPM what is the condition associated with each scan'. I hence entered the corresponding con-images 1,2 and 3 for subject 1 under ‚scans‘ and the vector [1; 2; 3] under ‚conditions‘ in order to assign each scan to its associated level. I repeated this for all of my subjects. However, when I run the analysis the design matrix does not look right and the parameters are not orthogonal (i.e. grey).
Can anyone give me a hint if I entered the data correctly in the first place? Any help is appreciated!
Thanks,
Lukas
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