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'''IQ''' or '''intelligence quotient''' is a measure of a person's cognitive ability. IQ is measured with tests that contain cognitive tasks that are chosen to | '''IQ''' or '''intelligence quotient''' is a measure of a person's cognitive ability. IQ is measured with tests that contain cognitive tasks that are chosen to only depend on prior knowledge that nearly everyone has such as the use of language or the concept of choosing among different answers. | ||
It turns out that performance on different IQ tests correlates somewhat (r = ~0.5) which means each human has a certain amount of ''general intelligence'' that largely determines their ability to act intelligently in ''all'' cognitive tasks. IQ has also been found to correlate with certain physiological measures, such as reaction time<ref>https://www.sciencedirect.com/science/article/abs/pii/S0160289601000629</ref>, brain volume,<ref>https://www.sciencedirect.com/science/article/abs/pii/S0160289616303385</ref> and color discrimation.<ref>https://www.sciencedirect.com/science/article/abs/pii/S0160289601000666</ref> This has lead to the conclusion that the more intelligent generally have more efficient and functional brains on a physiological level. | It turns out that performance on different IQ tests correlates somewhat (r = ~0.5) which means each human has a certain amount of ''general intelligence'' that largely determines their ability to act intelligently in ''all'' cognitive tasks. IQ has also been found to correlate with certain physiological measures, such as reaction time<ref>https://www.sciencedirect.com/science/article/abs/pii/S0160289601000629</ref>, brain volume,<ref>https://www.sciencedirect.com/science/article/abs/pii/S0160289616303385</ref> and color discrimation.<ref>https://www.sciencedirect.com/science/article/abs/pii/S0160289601000666</ref> This has lead to the conclusion that the more intelligent generally have more efficient and functional brains on a physiological level. | ||