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NATURE, NURTURE, ETC....
Sacerdote examined various outcomes of Korean children who had been randomly assigned to adoptive families in the U.S. during the 70s, and as the chart on the right shows, he concluded that family income had no effect at all on the eventual earning power of adoptees. Conversely, it had a big effect on biological children. In other words, being raised in a high-earning family doesn't seem to have much effect, while being born to to a high-earning family does....