That is true-the lead-crime link seems compelling. But I've been browsing a fair amount on the subject, and the lead-IQ link is always quite heavily featured.

That is true-the lead-crime link seems compelling. But I've been browsing a fair amount on the subject, and the lead-IQ link is always quite heavily featured. Some studies claim differences of 5 IQ points between children with blood lead levels between 5 and 10 micrograms per deciliter. Since blood lead levels are far lower than 5 for the majority of children nowadays, and much lower than they were when we were kids, these IQ differences should be clearly apparent between generations.