Hi,
Yes, this sounds fine to me - as long as the 'height' of the first-
level model*COPE can be considered comparable across sessions.
Cheers.
On 5 Jul 2009, at 12:46, Andreas Bartsch wrote:
> Hi,
>
> I have a rather general question about second level FE analyses:
> Is it legitimate to run a within-subject FE analysis across sessions
> with slightly different paradigms and tasks?
> Background: We have 3 session per subject (n~30) and each session
> was recorded under a slightly different paradigm / task. However,
> the sessions share certain main EVs and we were thinking to run a FE
> for these to get more robust and somewhat context-independent results.
> I can see that this will all depend on whether the assumption of a
> context-independent component to each run holds true but other than
> that does a FE in such case sound ok? Or would people strongly favor
> a 'conjunction'-type of analysis here?
> Thanks + cheers-
> Andreas
>
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Stephen M. Smith, Professor of Biomedical Engineering
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