I'm not a legal biologist but I think the colder weathers outside of Africa may have put greater evolutionary pressure for critical thinking for non-africans.
>>519420746Then explain why the Chinese are so smart despite southern China being basically tropical.
>>519420746By that logic niggers imported into the West should be geniuses
https://www.unz.com/jman/more-on-farming-and-inheritance-systems-part-i-iq/>In the case of IQ in Europe, I propose that a complex interaction between late marriage, the level of outbreeding, farming vs pastoralism, and climate during the Middle Ages gave us modern European intelligence.>The Middle Ages was an important time for the evolution of many traits that would eventually lead to modern society—not the least of these being IQ. But how did this happen? An important factor was examined by historian Gregory Clark. In his book, A Farewell to Alms: A Brief Economic History of the World, he discovered that the well-to-do of this time had an enormous survival advantage compared to their poorer peers. By examining wills from pre-industrial England, he found that the wealthy had far more surviving children than the poor. Similar patterns have been seen in continental Europe and probably also occurred in East Asia. I suspect that was this case for most of the civilized world in the northern latitudes. This created a selective pressure that favored evolution of “bourgeois” traits in the population, as “people gradually developed the strange new behaviors required to make a modern economy work. The middle-class values of nonviolence, literacy, long working hours and a willingness to save emerged.” It is this process that likely raised IQs of First World peoples to their present levels (and perhaps even higher).
>>519420746>may have put greater evolutionary pressure for critical thinking for non-africans.The map says you're on to something! The future is bright!
https://jaymans.wordpress.com/2012/01/17/iq-ceilings/>What if the reason that average IQ correlates with latitude is because climate imposes a ceiling on average IQ, not necessarily selects for a particular IQ level? There is some evidence that head and brain size faced biological constraints in the tropics, due the problem of overheating. And indeed, average head size increases with latitude, as can be seen here on this map of the average cranial capacities of indigenous populations:>Head size (and hence brain size) does indeed correlate with IQ, both between individuals and between groups, but it’s not a perfect correlation. Far northerners, such the Inuit, have the largest heads (and largest brains) but not necessarily the highest IQs (as well, peoples with the smallest heads don’t necessarily have the lowest IQs, but as one can see from comparing this map to the first, the pattern is fairly solid overall).
