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Dear "SPMers",

I am running a study where 2 groups of subjects undergo 6 scans in each
of 2 conditions.  One of the contrasts I wish to look at is differences
between the 2 groups irrespective on the condition.  I have entered the
study as "multi-study, with replications" with 2 groups and 2 conditions
in each group.
I enetered the following contrst matrix:

Contrast:    1    2    3    4    5    6    7    8    9    10   11   12
13   14
             1   -1    1    -1   -1   1   -1    1    0    0    0    0
-1    1
             -1   1    1    -1    1   -1   1    -1   0    0    -1   1
0     0
            -1    1    -1    1   -1   1    0    0    -1   1    0    0
1    -1
             1   -1    -1    1    1   -1   0    0    1    -1   1    -1
0     0

However what appears on the F map page of the output is:

Contrast:    1    2    3    4    5    6    7    8    9    10    11    12

             1   -1   -1    1   -1    1    0    0   0.5  -0.5  -0.5
0.5
             -1   1    1   -1    1   -1    0    0  -0.5   0.5   0.5
-0.5
             -1   1   -1    1    0    0   -1    1  -0.5   0.5   0.5
-0.5
             1   -1    1   -1    0    0    1   -1   0.5  -0.5  -0.5
0.5

Explanations please.  Am I trying to do something invalid?  Do I re-run
the analysis as 2 groups with 1 condition?

Thanks for any help

Mark



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