Add Yahoo as a preferred source to see more of our stories on Google. LoveToKnow / Creative via Getty Images Everything about a Leo is grand, flashy, showy, and dramatic, including their dark side.

The psychological theory of personality known as the Dark Triad—narcissism, psychopathy, and Machiavellianism—often carries a sinister undertone. When it comes to leaders, research has shown that ...

Find out about the latest happenings in the world of entertainment, and also learn from experts about: relationships, motherhood, sexuality, zodiac signs and beauty.

Research suggests that high neuroticism (compared to low) leads people to experience more negative and less positive feelings ...

Narcissism seems to get a lot of attention these days. Many authors, including the present one, have written about the negative characteristics of narcissism, and the harm they often bring upon others ...