Hi Cristina, In fsl_glm you'd use the options --out_cope and --out_sigsq. Then use fslmaths twice to divide the cope file by the square root of the sigsq file. fslmaths sigsq.nii.gz -sqrt sigma.nii.gz fslmaths cope.nii.gz -div sigma.nii.gz cohen.nii.gz All the best, Anderson On 19 September 2016 at 04:09, C. Roman <[log in to unmask]> wrote: > Thank you both for your replies! I was wondering if you could provide an > example of the exact command(s) that one would use to extract the effect > sizes/Cohen's d from TBSS randomise results? I looked on the discussion > board and have some idea, but it was also noted in some of the posts that > the commands were incorrect, so I'd like to get confirmation. > > Thank you! > Cristina > >