Dolphins have names for one another.
18
You can only remember 4 things at a time.
31
Intelligent men tend to be more sexually faithful.
31
Poor eyesight (myopia) is associated with higher IQ.
232
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
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264