could be lead poisoning or hot weather that fucks up their brain.
Mexico has an IQ of 88, large part of this is because half of their population have lead poisioning which can lower your IQ up to 8 points.
Some guatemalans have IQ that are higher than some european countries
Attached: guatemala IQ.png (522x352, 36K)
Mexicans in the US don't score much higher than 88 though. Both the Mexes and PRs score in the low 90s given English fluency and mainland US education
>they've got first world nutrition and everything?
This is a joke, right? Cuz I laughed
Quit using a proxy, loser