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

Learn how comparing aggression in chimpanzees and bonobos challenges the long-held belief that chimpanzees are the more violent of our closest ape relatives.

Research scientists say kids who are persistently aggressive or defiant in their teens were likely showing signs of persistent aggressive behavior years earlier when they are toddlers. Sometimes as a ...

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

Before we had gaslighting and narcissism, passive-aggressive behavior was considered a major faux pax. It still is and for good reason. But let's back up a second—what exactly is "passive aggression"?

Aggressive behaviors often characterized by action — such as manipulating others, hurting themselves or those around them, or engaging in harmful conversations with malicious intent. However, ...

Do you work with a student who consistently performs at a level that is beneath his ability? Is there a child in your classroom who habitually procrastinates, predictably “forgets,” and inevitably ...

The real danger of passive aggressive behavior is that it often sneaks up on adults, quietly accumulating as a series of minor but irritating behaviors. Then, suddenly, the young person makes one more ...