Aspects of our personality can be revealed in a heartbeat, literally.
Highly sociable tots, along with emotionally stable ones, were more likely than their peers to drink alcohol as teens.
It's tough to change personality. A new study shows our personalities stay the same throughout our lives, from child to adult.
A new study of an isolated Bolivian society shows the "Big Five" might not be as comprehensive as previously thought.
Children with so-called "helicopter parents" are more likely to be dependent, neurotic and less open, a new study finds.