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ChristianKl comments on Rationality Quotes Thread January 2016 - Less Wrong
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Pardon my ignorance, but all the "intellect realism" theories seem like they can be charitably paraphrased as group X:
- has a different mean IQ than the general population and/or
- has a different standard deviation for IQ and/or
- has a significantly skewed distribution from the normal curve
I've seen claimed IQ means in the 80s for black Americans. Observationally, American public life includes many black people for whom I find it implausible that they aren't pretty smart - eg Clarence Thomas, Colin Powell, Condeleeza Rice.
If I assume no difference in std dev or skew in intelligence distribution, it seems to me that I observe too many intelligent black folks for the mean to be in the 80s. Moreover, adding an assumption that std dev is lower doesn't help - now the successful black folk are explained, but I don't observe enough extreme low IQ folk.
That's why I conclude some error exists in the assumption of an 80s mean IQ.
Observing three people isn't observing many people. Blacks like those people aren't in the majority. Most blacks are less successful than most whites.