Re:Monumental advance in number theory posted to the ArXiv b...
by andrepd on Tuesday November 08, 2022 @10:37AM
(#33520130)
I read a study that specifically addressed this by looking separately at adopted kids. I'll try to look for it and post a link when I'm at my computer.
Is that controlled for genetic influence though? Suppose smart people 1) have high income, 2) have smart kids.
Disentangling the various causal factors is substantially harder than your quote above suggests.