Sorry,
It is me again...
Isn't this the same as the main effect of the group factor?
The results are the same if I model the main effect or get the main effect
from the interactions....
Thanks
boris
> This would be the difference between groups, averaged over your
> conditions, if I read this correctly.
>
> On Thu, 9 Nov 2006, boris suchan wrote:
>
> > Hi all,
> >
> > I posted this message before but did not get any reply.
> >
> > So here it is again with a nice liitle graphic attached.
> >
> > If I have a full factorial design and model the interaction, do I have
> to
> > model the main effects separately or can I define the main effects by
> > putting some conditions together? In the attached example there are 2
> groups
> > and three conditions. To get the main effect group, I would define
> something
> > like
> >
> >
> >
> > 1 1 1 -1 -1 -1
> >
> >
> >
> >
> >
> > Is this correct?
> >
> >
> >
> >
> >
> > Many thanks
> >
> >
> >
> > boris
> >
> >
> >
> > Priv.-Doz. Dr. Boris Suchan
> >
> > Institute of Cognitive Neuroscience
> >
> > Ruhr University Bochum
> >
> > Universitätsstr. 150
> >
> > 44780 Bochum
> >
> > GAFO 05/613
> >
> > Tel.: + 49 234 3227575
> >
> > Fax: + 49 234 3214622
> >
> > mailto: <mailto:[log in to unmask]> [log in to unmask]
> >
> > <http://www.ruhr-uni-bochum.de/neuropsy/mitarbeiter/boris_suchan.html>
> > http://www.ruhr-uni-bochum.de/neuropsy/mitarbeiter/boris_suchan.html
> >
> >
>
> --
> Volkmar Glauche
> -
> Department of Neurology
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> Universitaetsklinikum Freiburg Phone 49(0)761-270-5331
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