Quote (Thor123422 @ 24 May 2019 23:04)
We'll see if it stops, but we're still significantly higher than we were, especially since Huxlwy was alive
True we're certainly higher than in the 30s, but that's not what you said.
What you claimed was
Quote
Both are going up. This isnt something in dispute among any informed circles lol
which was completely wrong.
Quote (Goomshill @ 24 May 2019 23:07)
how does it compare on racially & socio-economically normalized samples?
it would be pretty simple explained by something like "all demographics experience an average rise in IQ, but demographics shift proportions to increase the weight of lower IQ populations"
there's also the question of age bubbles. Would homogeneous Japan follow this trend, or would a senile population decrease on average?
There are studies cited in the links that I posted which say that this IQ stagnation/regression can also be observed within families in parent/children comparisons or between younger and older siblings. This contradicts the hypotheses that the drop in IQ is caused by low-IQ immigration or by higher fertility rates of lower-IQ classes within the developed world. Havent read those original studies though, so I cant say how persuasive and how methodologically sound they are.
This post was edited by Black XistenZ on May 24 2019 03:26pm