Dear Emily,
the Glascher&Gitelman document is definitely a useful reference. To get
further advice, it would be useful if you could describe what your data
and factors are, as well as the models and contrasts you already looked at.
Best regards,
Guillaume.
On 11/03/15 18:50, Emily Hird wrote:
> Dear SPM experts,
>
>
>
> I’m running a flexible factorial for the first time and consequently
> I’ve been seeking advice on the mailing list about the best way to do this.
>
>
>
> I’ve noticed a few recommendations for the Glascher-Gitelman tutorial
> (attached). Is this a reliable source of advice for running a flexible
> factorial ANOVA?
>
>
>
> I also seem to have noticed mixed advice on the mailing list for whether
> or not to mark factors as dependent, and whether to mark variance as
> equal. I assume this is based on the characteristics of your factors,
> but is there a general rule I’m missing?
>
>
>
> Also, when I include subjects as a main effect, it seems to change my
> data. This seems strange as the subject effect should be included in the
> ANOVA anyway. Would you advise running the ANOVA with or without
> subjects included as a main effect?
>
>
>
> Thank you for your time!
>
>
>
> Emily Hird
>
> PhD student
>
> School of Psychological Sciences
>
> Zochonis Building, Brunswick Street, Manchester M13 9PT
>
>
>
--
Guillaume Flandin, PhD
Wellcome Trust Centre for Neuroimaging
University College London
12 Queen Square
London WC1N 3BG
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