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
More than half the population of Kenya is under the age of 15.
71
Every three seconds, a new baby is born.
122
In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82
Americans will spend more on cat food this year than baby food.
32
Women rate men more attractive if other women are looking and smiling at him.
17
People with blue eyes are better able to see in the dark.
153
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155