Although most schizophrenia victims aren't always violent, and some even manage years of 'recovery', the most violent folks almost always have some form and degree of schizophrenia ~ combine that with self-medication and you have the very image of a filthy, dirty, slovenly abortionist who's drunk most of the time, and has no problem at all murdering babies.
The behavior is certainly psychotic, but that's not the cause.
“this was covered fairly well just two years ago in an article in Science News”... I’d like to read that article and would be appreciative if you could provide a link. Evidence does strongly suggest schizophrenia is genetic but where in the genetic lineage did such first show it’s ugly head? You probably saw this thread, but I noticed you did not post; http://www.freerepublic.com/focus/f-news/3022920/posts