Awarding people money for doing well in IQ tests causes them to score better, $10 increased people's score by an average of more than 20 IQ points. IQ tests don’t just measure intelligence - they also measure effort.
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44% of kids watch television before they go to sleep.
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The average person falls asleep in seven minutes.
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Every workday, 6.7 million people commute to Manhattan!
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76% of Americans celebrate New Year's Eve in groups of less than 20.
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Two in five people in the world marry their first love.
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