Nearly 10% of American households dress their pets in Halloween costumes.
36
Americans collectively eat one hundred pounds of chocolate every second.
60
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
You can only remember 4 things at a time.
31
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
119
Intelligent people have more zinc and copper in their hair.
233
