IQ calculates processing speed, which is why it is timed. Many people can are good at problem solving, but what takes a normal person a week instead might take an IQ genius 5 minutes. That is all.
And a normal person can then train themselves to do that week in 5 minutes. It's like muscle mass: you're born with a genetic inclination to be weaker or stronger than average but the rest is up to you.
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I think IQ does measure something, but not what we generally consider as intelligence
IQ calculates processing speed, which is why it is timed. Many people can are good at problem solving, but what takes a normal person a week instead might take an IQ genius 5 minutes. That is all.
And a normal person can then train themselves to do that week in 5 minutes. It's like muscle mass: you're born with a genetic inclination to be weaker or stronger than average but the rest is up to you.