[Don't Be That Guy]

Originally Posted by jtown,man

I was responding to this sentence:

"The Clean Air Act, the phasing out of leaded gas, and the steady removal of lead from the built environment has resulted in a dramatic drop in violent crime and teenage pregnancies."

There were no qualifiers in that statement. My basic logic is that of course this person probably thinks there were other reasons, but none were stated in the only qoute I saw.

The person you're responding to probably made that statement without qualifiers because the link between lead exposure and cognitive behavior has been extensively studied over the several years. To quote the linked article "high lead concentrations correlate so well that you can overlay maps of crime rates over maps of lead concentrations and get an almost perfect fit."