Singapore is a small country which deliberately attracts elites and tries to practice eugenics; so I don’t think that’s a very good example at all to use against a statistical generalization...
According to Wikipedia, the genetics of the Han Chinese is… complicated. But even if high-IQ genes were ancestral in northen Hans and then were transferred to southern Hans due to migrations, if warm climates selects negatively for intelligence I think we should expect that in the last 2,000 years those high-IQ genes would not have thrived in South China.
That doesn’t show the absence of a gradient, because they’re reporting, if I’m understanding the description right, a PISA-aggregate of 12 provinces; the only other scores are places you’d expect to be outliers and unaffected by any evolution (Shanghai, Hong Kong, etc). There is a map, but:
all perform well above average according to stats from a Chinese online IQ testing website.
Yeah… Plus, note the striking East-West gradient. So this map is serving more as a measure of economic development and Internet access than a random sample demonstrating lack of gradient.
According to Wikipedia, the genetics of the Han Chinese is… complicated.
I’m not surprised. The Han have been expanding relentlessly for a long time.
Singapore is a small country which deliberately attracts elites and tries to practice eugenics; so I don’t think that’s a very good example at all to use against a statistical generalization...
Ok.
But China is also pretty smart, and as far as I know it doesn’t have a North-South IQ gradient: http://akarlin.com/2012/08/analysis-of-chinas-pisa-2009-results/
According to Wikipedia, the genetics of the Han Chinese is… complicated.
But even if high-IQ genes were ancestral in northen Hans and then were transferred to southern Hans due to migrations, if warm climates selects negatively for intelligence I think we should expect that in the last 2,000 years those high-IQ genes would not have thrived in South China.
That doesn’t show the absence of a gradient, because they’re reporting, if I’m understanding the description right, a PISA-aggregate of 12 provinces; the only other scores are places you’d expect to be outliers and unaffected by any evolution (Shanghai, Hong Kong, etc). There is a map, but:
Yeah… Plus, note the striking East-West gradient. So this map is serving more as a measure of economic development and Internet access than a random sample demonstrating lack of gradient.
I’m not surprised. The Han have been expanding relentlessly for a long time.