Passive-aggressive tendencies are disruptive, embittering, and capable of producing significant self-doubt and insecurity. Typically, individuals resort to these behaviors to avoid confrontation or ...

Chimpanzees have a reputation for being aggressive, while bonobos are often seen as their peaceful counterparts. This contrast has frequently been used to explain different sides of human nature.

Is aggression part of our primate nature, wired into our systems because it helps us survive, or do we learn it from such seemingly innocent occupations as watching cartoons and wrestling matches on ...