> The authors acknowledge that an enriched social, educational, economic and intellectual environment can and does raise intelligence scores, but they insist that even when due allowance is made in terms of statistical comparisons of all other factors and measuring their relative weights, intelligence still seems to be strongly influenced by the genes of one's forebears.

https://www.nytimes.com/1994/10/16/books/what-is-intelligenc...

https://www.nytimes3xbfgragh.onion/1994/10/16/books/what-is-...