Thread:User talk:WaitingforGodot/IQ tests/reply (21)

It's probable more of a cultural thing than an outright genetic thing, but like off this nature vs nurture crap the answer is undoubtedly both. If you did take humans from 1000 years ago and made them grow up today, I'm sure you'd probably see a statistical tendency for them to be less intelligent, but not by the amount you'd expect it to drop if they were actually 1000 years ago.