In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82
Babies cry but they don't produce tears until one to three months after birth.
238
Women rate men more attractive if other women are looking and smiling at him.
17
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
There are two credit cards for every person in the United States.
2
47% of people have a nightmare at least once a month.
186