I hear people say that high IQ doesn’t mean you are automatically good at something, but what does it mean then, in terms of physical properties of the brain? And how do they translate to one’s abilities?
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There have been efforts to take “how good is your brain” and answer the question with a single number, the larger the number the smarter you are. The idea being you can use this as a predictor to select the best minds for certain training and education. It’s supposed to be unrelated to how much you have learned. So if I take an IQ test as a child, and I take an IQ test after college, I should score about the same because my IQ isn’t about how much I know.
But in practice, all the questions are answered via knowledge. People test higher with repeat attempts and study. So IQ is not a number attached to this underlying brain capacity. Many/most consider the idea of IQ flawed to the point of meaningless because currently there is not that separation from knowledge.
Further complicating and discrediting IQ is that it’s mostly used by elitists and supremacists as ‘evidence’ and rarely used by productive organizations as a predictor for anything (because it doesn’t seem to actually work).
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