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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The offspring of two sets of identical twins are legally cousins but genetically siblings.
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The higher the income, the more likely an American man will cheat on his wife.
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There's a guy named Fire Penguin Disco Panda.
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Muhammad is the most common name in the world.
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Intelligent men tend to be more sexually faithful.
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Women who are romance novel readers are reported to make love 74% more often with their partners than women who do not read romance novels.
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76% of Americans celebrate New Year's Eve in groups of less than 20.
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