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The sample size = 1 may not be enough to perceive any meaningful difference[x], but it doesn't matter. Migratory waves are not made of 1 infant with no parents.

The sample size = 1 may not be enough to perceive any meaningful difference[x], but it doesn't matter. Migratory waves are not made of 1 infant with no parents. People mostly come in great numbers and carve their own ethnic communities within the host country. [x]Various studies have found the heritability of IQ to be between 0.7 and 0.8 in adults and 0.45 in childhood in the United States. It may seem reasonable to expect that genetic influences on traits like IQ should become less important as one gains experiences with age. However, that the opposite occurs is well documented. https://en.wikipedia.org/wiki/Heritability_of_IQ#estimates https://en.wikipedia.org/wiki/Heritability_of_IQ#estimates

jmmcd 9y ago
> The sample size = 1 may not be enough to perceive any meaningful difference Yes, and I assumed this was obvious. I did say "expect", after all. But a large-N experiment where each child is in the "isolated" condition is totally different from a large-N experiment where a large population is transplanted. > Migratory waves are not made of 1 infant with no parents. Whether immigrant communities preserve culture etc is not in question. I'm only refuting the point that there is a large genetic component, and your argument here effectively concedes that.