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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Boys who have unusual first names are more likely to have mental problems than boys with conventional names. Girls don't seem to have this problem.
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Males sweat 40% more than females.
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People who have a strong friendship possess the ability to communicate with one another through facial expressions.
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Babies cry but they don't produce tears until one to three months after birth.
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If you're over 100 years old, there's an 80% chance you're a woman.
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Half of all Americans over the age of 55 have no teeth.
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