Lead, evil, and corporate free speech
Kevin Drum, who's been doing Pulitzer-quality science and policy reporting on the behavioral effects of environmental lead, has yet another item today, once again reporting a new paper by Jessica Wolpaw Reyes of Amherst, who's been doing the fancy number-crunching on the topic. No real surprise: in addition to greatly increasing rates of criminal behavior, lead exposure also increase the risk of other consequences of poor self-command, such as early pregnancy. Kevin draws one of the right morals of the story: that biology matters, while liberals and conservatives tend to unite in blaming everything on society, economics, and culture:
It's a funny thing. For years conservatives bemoaned the problem of risky and violent behavior among children and teens of the post-60s era, mostly blaming it on the breakdown of the family and a general decline in discipline. Liberals tended to take this less seriously, and in any case mostly blamed it on societal problems. In the end, though, it turned out that conservatives were right. It wasn't just a bunch of oldsters complaining about the kids these days. Crime was up, drug use was up, and teen pregnancy was up. It was a genuine phenomenon and a genuine problem.
But liberals were right that it wasn't related to the disintegration of the family or lower rates of churchgoing or any of that. After all, families didn't suddenly start getting back together in the 90s and churchgoing didn't suddenly rise. But teenage crime, drug use, and pregnancy rates all went down. And down. And down. Most likely, there was a real problem, but it was a problem no one had a clue about. We were poisoning our children with a well-known neurotoxin, and this toxin lowered their IQs, made them into fidgety kids, wrecked their educations, and then turned them into juvenile delinquents, teen mothers, and violent criminals. When we got rid of the toxin, all of these problems magically started to decline. This doesn't mean that lead was 100 percent of the problem. There probably were other things going on too, and we can continue to argue about them. But the volume of the argument really ought to be lowered a lot. Maybe poverty makes a difference, maybe single parenting makes a difference, and maybe evolving societal attitudes toward child-rearing make a difference. But they probably don't make nearly as much difference as we all thought. In the end, we've learned a valuable lesson: don't poison your kids. That makes more difference than all the other stuff put together.
"Let's live on the planet as if we intend to stay."