I'd submit that the two are related (no not completely related) and are the result of a larger problem. This article is a classic example supporting the "correlation does not imply causation" rule.
These endless "studies" are not solving anything. Why not study the true cause of poverty? Why not aim some studies and the poverty industry that keeps kids and families in a poverty cycle?
I theorize that the lack of family structure (kids with one-parent missing) and and entertainment industry glorifying the wrong things is a good place to start. I'll bet we'd find a lot of causation there.