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.
9
Yawns are more contagious among people with closer relationships.
163
The “cheerleader effect”, the theory that girls look more attractive in groups, is scientifically proven.
8
People with light eye colors (like blue, green or grey) have a higher alcohol tolerance.
194
The average person laughs 13 times a day!
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