Comment by tfigment

I can only speak from personal experience but that is what happened to my family. My brother is a sociopath who caused our family a lifetime of difficulty. The biological mother was drug addict and abusive before adoption and he became an addict. My sister also adopted from different family was less of a problem but also had some issues. My dad was very kind and not abusive and spent way too much trying to help. Who knows maybe it was environment and early abuse or something but nature stacked the deck I think in my family. The other issue with adoption is limited access to family medical history.