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Eugenia Fitted data are the modelled data (y if I remember) and adjusted are the real data minus confounds ie the effects that are not used for the analysis / plot (Y in the workplace ... or y whichever is messier looking) For correlations I would use the real data or the beta parameters .. this can be extracted by many tools available on the SPM website extensions ... my favorites being marsbar and my own tool of course called EasyROI Good luck Cyril Dr Cyril Pernet SBIRC / SINAPSE University of Edinburgh ----- Reply message ----- From: "Gena Radulescu" <[log in to unmask]> Date: Mon, Nov 22, 2010 20:13 Subject: [SPM] y values To: <[log in to unmask]> Dear All, Here I have a question regarding the y values after plotting various contrasts in a second level analysis. If using plot -> contrast of parameter estimates and 90% C.I. and then selecting y values in Matlab, I get the adjusted, but not fitted data. If using fitted responses -> adjusted -> plot against an user specified ordinate and then selecting y values, I get the fitted and adjusted data. Is this correct? If not, what is the meaning of the two kind of y values (which are quite different!)? If wanting to correlate extracted data with behavioural parameters, which of the two 'y' are better to use? Thank you in advance for feedback, Eugenia *Dr. Eugenia Radulescu,* Postdoctoral Research Fellow Sackler Centre for Consciousness Science, Brighton and Sussex Medical School, UK