A while back I heard an ex-military man and author claim that first-person video games do lead to gun violence. He made the claim that better medical care has has hidden the rise in gun violence by reducing the mortality rate. It does make intuitive sense, if one looks at murder per se. While I don't think I've really answered your question, I just wanted to say that it may be an 'old' idea in some fields. Perhaps economists could profit from it.
-jsh __________________________________________________ Do You Yahoo!? HotJobs - Search Thousands of New Jobs http://www.hotjobs.com