The differences between people’s personalities can be broken down in terms of five major traits—often called the “Big Five.” Each one reflects a key part of how a person thinks ...

Three traits, often called the Dark Triad—narcissism, psychopathy, and Machiavellianism—are commonly assessed to investigate the darker, or more antagonistic and self-interested side of human ...

The signs rotate every year--from year of the rooster to year of the dog, for example--and it's believed that people born in years corresponding to a certain symbol will have personality traits ...