And maybe this smarter generation (because this generation seems to be smarter) may be a factor that women in the 50s and early 60s smoked and drank during pregnancy. It was accepted. And they gave formula, without omega fatty acids.

I do not know. But Ruf's hypothesis is that highly educated parents produce HG+ kids. When she speculated how many level 4s and 5s were in various neighborhoods, she indicated that parent level of education was a factor in estimates.

I can tell you, since I wrote up hte article for the Parents' League. One year of music lessons on a string instrument raises IQ by 7-10 points. They did one study in a poor LA area and the findings were consistent. And continued music lessons continues to increase IQ levels. But it has to be string. Drums didn't work. Drama lessons increases self confidence but did nothing for IQ. The speaker was from NYU medical school specializing in gifted children.

Ren