When people with very high IQs are given moderately difficult tasks, their brains work more efficiently compared to those of people with slightly above average IQs.
To describe the effect, Elsbeth Stern, a professor at ETH Zurich, uses the analogy of a more and less efficient car: “When both cars are traveling slowly, neither car consumes very much fuel. If the efficient car travels at maximum speed, it also consumes a lot of fuel. At moderate speeds, however, the differences in fuel consumption become significant.”
Scientists refer to this as the neural efficiency hypothesis—although most experts accept it as an undisputed fact.
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