Poor eyesight (myopia) is associated with higher IQ.
232
People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
13
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 the US, people can be rejected from joining the police force if they are too intelligent.
45
Intelligent men tend to be more sexually faithful.
31
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29