For decades, scientists believed that bonobos, one of our closest living relatives, were among the most peaceful primates.

A new study of chimpanzee and bonobo groups at zoos reveals similar levels of aggression. However, scientists found stark sex-based differences between the species.

When people with high levels of narcissism feel ignored or excluded by others, they are more likely to lash out using specific types of passive-aggressive behavior. A recent study published in the ...

Chimpanzees have a reputation for being aggressive, while bonobos are often seen as their peaceful counterparts. This ...

Aggression Is More Common Than Drivers Realize Aggressive driving has become widespread in recent years. A survey from the AAA Foundation for Traffic Safety found that 96% of drivers admitted to ...

Passive-aggressive people often say these 11 unnerving things without even realizing how damaging they sound. If you've ever ...

By Will Dunham WASHINGTON, March 13 (Reuters) - Bonobos for years have had the reputation of being the cool hippies of the ...

Call it hostile cooperation, sugarcoated hostility, or compliant defiance. Call it all of the above. Passive aggression does not alternate between passive behavior and aggressive behavior, but rather ...

Passive aggression, like most troubling aspects of behavior, occurs on a continuum. We have identified five distinct and increasingly pathological levels of passive-aggressive behavior that tend to ...

Forbes contributors publish independent expert analyses and insights. Patricia writes about family law and tips for female lawyers. Aggression is defined as a form of physical or verbal behavior ...