Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
Intelligent people have more zinc and copper in their hair.
233
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Intelligent men tend to be more sexually faithful.
31
Dolphins have names for one another.
18
People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
13