Hello,
I'm attempting to use 3dTcorrelate to obtain Spearman correlation values for the relationship between parents' and children's responses during a task condition. I first used 3dTcat to put each subject's values into sample datasets ('parent_sample_17dyads+tlrc' and 'youth_sample_17dyads+tlrc'). I then ran the following command:
3dTcorrelate -spearman -polort -1 -prefix parent_youth_spearman_corr_3dtcorr1d_17dyads parent_sample_17dyads+tlrc youth_sample_17dyads+tlrc
The results seem to make sense, but the only problem is the output does not provide p-values. It just says "[N/A]" below the slider. This doesn't happen when I use the default Pearson method. I tried using the '-automask' option, but for some reason that doesn't seem to work on my data. It actually tends to mask out the brain.
Is significance testing not supported for Spearman values with 3dTcorrelate?
Thank you,
Kara
