It's definitely a 50/50 thing- nature/nurture, and of course, what goes along with that is someone's predisposion (geneticall;y influenced) to be a certain way and so it's a very confusing subject. Some would argue some people are just born 'evil', and other's become that way. I thinjk it's both, personally, as both cases are widely seen throughout the criminal justice system. Sorry, I didn't read the article.