3 ms·
It's only 3 IQ points, 1/5 of a standard deviation so not really massive. Of course there are much bigger effects on IQ such as the factors that cause low incom
by sacrosancty 5y ago
It's only 3 IQ points, 1/5 of a standard deviation so not really massive. Of course there are much bigger effects on IQ such as the factors that cause low income children, and people in poor countries to have low IQs which swamp the lead effect.