Thanks! I know I can run this as a between group t-test after doing the
subtraction but I'd like to know how to do it as an ANOVA.
The link you sent was helpful. I'm curious if there is any other
information available on how to actually implement this in SPM (more of
an applied example).
Thanks for your help.
Jatin
-----Original Message-----
From: Stephen J. Fromm [mailto:[log in to unmask]]
Sent: Friday, January 01, 2010 7:53 AM
To: [log in to unmask]; Vaidya, Jatin G
Subject: Re: 2 x 2 ANOVA
On Thu, 31 Dec 2009 22:38:19 +0000, Jatin Vaidya <jatin-
[log in to unmask]> wrote:
>Hi,
>
>I'm trying to run a 2 X 2 design with PET data. The first factor is
group
(user
>vs. control). The second factor is task (tapping vs. control); thus,
this is a
>repeated measures variable.
>
>I can't seem to determine how to run the analysis in SPM with this type
of
>dataset. Is there a good resource available for this?
http://www.fil.ion.ucl.ac.uk/~wpenny/publications/rik_anova.pdf
In this particular case, if you're only interested in comparing tapping
with
control (i.e., not interested in tapping alone or control alone or their
average,
but only their difference), you could also just subtract control from
tapping at
the subject level (or using ImCalc), and bring the difference to the
group
level, resulting in a 1-way, between-subjects ANOVA with no repeated
measures.
>
>Thanks,
>
>Jatin
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