Hi Rosalia,
this would be 0 mean only in the case you have the same number of
left-handed and right-handed subjects. I think you simply have to demean
these values.
best
Angela
> Dear Fsl experts,
>
> Sorry, about my last message:
>
> If I need to make excactly zero mean when substracted a EV regressor from
> all the original values..., the right would be coding:
>
> Right handedness = 1
>
> Left handedness = -1
>
> Is it correct,
>
> Cheers,
>
> Rosalia.
>
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