Various causes have been credited for the decline of violent crime in the 1990s in the U.S., one of which was the legalization of abortion in 1973. I didn't re

Various causes have been credited for the decline of violent crime in the 1990s in the U.S., one of which was the legalization of abortion in 1973. I didn't realize violent crime declined globally at the same time. That makes me think that perhaps leaded gas is a more likely culprit. Untreated ADHD has also been linked to violent crime, so with any luck we'll continue the downward trend in violent incidence as the treatment of ADHD continues. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3398051/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3398051/