3 ms·

This study says the Flynn effect has been reversing for starting in the birth year 1975. https://www.pnas.org/content/115/26/6674 https://www.pnas.org/content/

• AlecSchueler 7y ago
  From the 70s-2000 there was considerably more led in the atmosphere than before/after which I've seen linked to increased rates of e.g. violent crimes globally during that period. I suspect that the reversal of the Flynn effect during that time is also related and we will see the reverse of the reverse from kids born since the 00
  • perl4ever 7y ago
    Huh? The late 70s was when lead was banned in a lot of stuff. And you can see the higher violent crime in countries that used lead longer, like say Venezuela. So, yeah, everybody knows about the linkage, but it should make you stop and consider that it would make you expect the opposite of the claim above.