Looking briefly through Pubmed and Google Scholar, there’s no solid results besides the general belief that there must be genetic correlates due to the familial trends. (I also see mention of arguments for combining and an fMRI meta-analysis that apparently concluded they were the same.)
Looking briefly through Pubmed and Google Scholar, there’s no solid results besides the general belief that there must be genetic correlates due to the familial trends. (I also see mention of arguments for combining and an fMRI meta-analysis that apparently concluded they were the same.)