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SPMers, I have employed a multiple regression model for a second level analysis in SPM2 (the regression option without a constant), with two covariates (c1 and c2), and an appropriate contrast image for each participant. I have three questions: 1. Does this model report standardised regression co-efficients? 2. To look at the effect of c1, without regressing out the effect of c2, I have entered a contrast vector of [1 0]. Should this contrast report the same effects as a simple correlation? 3. To obtain the effects of c1 with c2 regressed out, should I enter a contrast vector of [1 -1], or [1 1]? Thanks in advance, Matt.