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Originally Posted by All Darc
Suspicious graphics... Is the nfirst two just for USA?
Hard to believe that in 1800's people married and had kids later than in 1950's
USA population decline?? Hard to believe.
But I think sicentists are relutant to measure IQ and fertility (birth rates) among populations. They would find data about stupid people have more kids than intelligent péople today. Not jsut stupi (lower IQ) but people more agressive, more prone to drug and drunk behavior and antisocial. For me this is reverse eugenics.
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It was US graphs. USA population is in decline except that immigration keeps the numbers positive. The '50s were the baby boom in the USA.
I'd say lower IQ people in general plan less and give in to instant gratification more (as opposed to delayed gratification). That would support the hypothesis that they have more children, and at younger ages.
The educated and wealthy (and higher IQ) among us tend to wait until 30 to get married, and then have a very short reproductive window.