I was referencing the studies that show a low heritability in infancy and early childhood and then the it rises in adolescence and adulthood.
I'm not sure what you mean here; either a trait is inherited or not?
As for general heritability of IQ in a good SES environment, I have trouble believing that there's little correlation. We have way too many HG+ parents here with HG+ kids for me to accept that --- plus, I've been to gatherings of PG types with PG kids.
In the case of my 2 PG kids at least, the giftedness was evident in both of them before we left the hospital. People (including the pediatrician) commented on how alert they were during their first couple of months.
ETA: I'm not saying that IQ disparities between parents and kids don't exist, just that I can't accept that heritability is low or not there because of standard of living.
