I have some questions about the cultural bias of IQ tests.
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Why is it that people who take IQ tests and score well on them are rarely if ever only good at IQ tests? Because IQ reliably predicts someones educational achievement, what sort of occupation they end up in (doctor vs custodian etc), whether they’ll stay married, their chances of getting in trouble with law and much more. Also IQ has shown to not be particularly manipulated by environmental factors and usually leads to complete failure whenever attempts have been made (see the $7 Billion Obama spent to fix schools).
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why are there visible physiological correlates with IQ, such as head and brain size, as well various anatomical features of the brain, such as cortical thickness? We are also now seeing a 0.72 correlation between prediction based on imagery and test-measured IQ.
http://www.sciencedirect.com/science/article/pii/S0160289613001037
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Why don’t East Asians freshly landed in the West do not suffer from “cultural bias” when taking IQ tests? I mean why do they reliably score 105 (higher than whites)?
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Why does IQ tests over-predict of individuals from lower-scoring groups such as blacks? If the claim is that IQ tests are culturally biased against Blacks, for example, then they should perform worse on the intelligence test relative to their “true” intelligence. If so, then IQ tests would under-predict their real-world performance relative to Whites. But we see exactly the reverse! Blacks do worse in real-life than you would expect from their IQ scores alone. Cultural bias cannot be an explanation.