The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Intelligent people have more zinc and copper in their hair.
233
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
Dolphins have names for one another.
18
Poor eyesight (myopia) is associated with higher IQ.
232