According to the American Society for Microbiology, 90% of women and 75% of men wash their hands after using a public restroom.
170
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
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
119
The Japanese commonly put ketchup on their rice.
16
The average single man is one inch shorter than the average married man.
88
Half of all Americans over the age of 55 have no teeth.
39
Yawns are more contagious among people with closer relationships.
163