Hi Andy,
Both types of analyses are possible (see recent posts on this list) and they ask different questions.
So which one to use is up to you and what makes most sense for your experiment and hypotheses.
All the best,
Mark
On 29 Apr 2014, at 15:10, Andy J <[log in to unmask]> wrote:
> Hi All,
>
> What are people's views on using covariates based on differences in higher-level repeated measures analyses?
>
> Specifically, given N higher-level pair-wise contrasts, one could include covariates based on differences in, for example, some behavioural measure (demeaned or normalized). E.g., for the contrast Cond1 - Cond2, one could include Behav1 - Behav2, resulting in maps that are "sensitive" to how differences in "Behave" relate to differences in "Cond".
>
> Thanks!,
>
> Andy
>
>
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