Dear Dan and David,
thank you for your suggestions. They helped me.
When I include the other covariates from my glm into the partial correlation analysis, I get significant correlation between the behavioral measure and brain activation.
Thanks for the Kriegeskorte et al.(2010)! I have already read Paldrock et al. and Vul et al. and were sceptical about the correlations. But even they are circular and inflated I wanted to know how strong the relationship might be and if there were any outliers.
Best,
Elif
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