Hello SPMers,
I have a sample with twins and would like to test whole brain level heritability. I was wondering if there's any way that I can do whole brain correlations between twins. I know I could do a paired t-test, but I don't know how (or if I can) to transform the t-values to r-values. If I could do that, I guess, afterwards, I could just use imcalc to do the remaining computations. Any thoughts, references, tutorials (for dummies) will be highly appreciated.
Thanks!!
Victoria
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