People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
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You can only remember 4 things at a time.
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The higher someone’s I.Q. the more likely they are to be sleep deprived.
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Poor eyesight (myopia) is associated with higher IQ.
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Intelligent people have more zinc and copper in their hair.
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Dolphins have names for one another.
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