Men fall in love faster than women do.
32
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
One million Americans, about 3,000 each day, take up smoking each year. Most of them are children.
-86
In Haiti, only 1 out of every 200 people own a car.
23
The average single man is one inch shorter than the average married man.
88
The “cheerleader effect”, the theory that girls look more attractive in groups, is scientifically proven.
8
The world's youngest parents were 8 and 9 and lived in China in 1910.
130
2% of Europeans lack the genes for smelly armpits.
6