Since a dramatic peak in the 1980s, serial killers in the U.S. like Ted Bundy and Jeffrey Dahmer have been in decline for three decades. Experts have a few theories that can help explain why.
The other theory I’ve heard that makes some sense is lead exposure. From 1925 to about 1976, lead was commonly added to gasoline. Lead is known to cause psychological problems including irritablity and general mood disorders.
Pretty much everyone born during that period was exposed to aerosolized lead.
The other theory I’ve heard that makes some sense is lead exposure. From 1925 to about 1976, lead was commonly added to gasoline. Lead is known to cause psychological problems including irritablity and general mood disorders.
Pretty much everyone born during that period was exposed to aerosolized lead.
I don’t believe that it’s lead; see my other comment on it. The lead reductions would have come much too late, and the falloff is too sharp.