People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
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The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
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You can only remember 4 things at a time.
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In the US, people can be rejected from joining the police force if they are too intelligent.
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Intelligent people have more zinc and copper in their hair.
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