The decline in crime across both the US and Europe does align with the phaseout of lead.
Other things were happening at the same time such as changes in policing, incarceration, economic conditions, and access to mental health care.
It is hard to know how much each carries in weight.
The decline in crime across both the US and Europe does align with the phaseout of lead.
Other things were happening at the same time such as changes in policing, incarceration, economic conditions, and access to mental health care.
It is hard to know how much each carries in weight.