Well, with a TEN YEAR OLD STUDY that treats a 19 year old as an adolescent boy makes me suspect something's wrong..
The anti-gun crowd does this too, suggesting "Children" are murdered, and in the small print you notice they include 18 and 19 year olds..
BAH....
The gun grabbers call them "youths" and include males up to age 25. Gang members, thugs, drug dealers, crooks...