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

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

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

Add Yahoo as a preferred source to see more of our stories on Google. How can parents distinguish typical aggressive behavior in kids from something more extreme? Experts explain. (Image: Getty; ...

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.

Driving may feel routine, but psychologists say it is one of the most complex behaviors people perform every day. From reaction time and decision-making to emotional control, driving draws heavily on ...

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

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 ...

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 ...

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 ...