Makes a lot of sense, I think I read that study some time ago. I do want to be clear that I'm not calling all conservatives psychopaths. The psychopaths are the ones in government and executive positions.
Run of the mill conservatives are probably deficient in the ways you describe and likely abuse victims (the one I knew well was in fact) which manifests as fear, hate, gullibility, desire for retribution, etc. Many are also just victims of propaganda, stuck, or too unintelligent to find their own way so follow some strong personality around them.