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Dear Anderson, Here it is the design. Kind regards, Rosalia. 2015-01-25 17:35 GMT+01:00 Anderson M. Winkler <[log in to unmask]>: > Hi Rosalia, > > It depends. Sometimes we want to demean EVs, sometimes we don't. It also > depends on how the groups were coded and other factors. Maybe if you show > the design or give more details it'd be simpler to comment. > > Thanks > > All the best, > > Anderson > > > 2015-01-24 17:54 GMT+00:00 Rosalia Dacosta Aguayo <[log in to unmask]>: > >> Dear FSL experts, >> >> I have a question regarding covariating for dichotomic variables (1 or 0) >> when running randomise. >> >> Should I sum all the 1 in the group A and make average of them and >> substract the average to every 1? >> >> Thank you, >> >> Rosalia. >> > >