If I understand Dr. Charlton correctly from the last post (he can correct me if I'm wrong), complex agricultural societies selected against creativity, so levels should be depressed among, for example, the Chinese compared to, say, American Indians.
Allow me a weak attempt at testing this. GSS asked people how much do they agree that they have an active imagination. Here are the means by race:
Mean creativity scores (sample size = 1,500)
NE Asians 4.10
American Indians 4.09
All Americans 3.96
While American Indians have a mean that is a bit above average, so do Northeast Asians (Japanese and Chinese) which is not expected. Whites and blacks are also basically the same which would not be predicted. Jews, I think, should also have low scores, but theirs is the highest.
It's dangerous business comparing racial/ethnic groups on self-reported traits, so take these numbers for what they are worth (perhaps nothing).
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