1) I've been trying to run a lower level analysis for a large number of
contrasts in different combinations and have received the following
At least one EV is (close to) a linear combination of the others. You
should probably alter your design. (Design matrix is rank deficient -
ratio of min:max eigenvalues in SVD of matrix is 0.000000e+00)
2) I could technically run the analysis later but received no results.
3) The EV's are expected to have very different values and I do not
understand how one could be a combination of another.
Any explanation and help would be appreciated,