Dolphins have names for one another.
18
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
People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
13
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155