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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76% of Americans celebrate New Year's Eve in groups of less than 20.
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About 2/3 of American men prefer boxers to briefs.
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People with light eye colors (like blue, green or grey) have a higher alcohol tolerance.
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Infants spend more time dreaming than adults do.
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More boys than girls are born during the day; more girls are born at night.
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