Dear All,
 
My reviewer asked me to report Cohen's d in a VBM analysis. It seems it is easy caculate effect size in ROI analysis, that I can caculate effect size in SPSS for ROI analysis. However, how can I caculate it in SPM contrast? If this is possible, is it the average effect size across a activation cluster will be reported in SPM? Thank you very much!
 
Best regards,
Zude.