Related topics: aggression

For lemurs, sex role reversal may get its start in the womb

Anyone who says females are the 'gentle sex' has never met a lemur. Lady lemurs get first dibs on food, steal their mates' favorite sleeping spots and even attack males, swatting or biting those that annoy them.

Owner training key to reducing risk of dog bite injuries

Dog attacks have been on the rise and it may the owners who need to go back to school. A new study published in Risk Analysis: An International Journal investigated what leads dog owners to train their pets using positive ...

How gangs use social media

The menacing photos that Tevin, a young man affiliated with a Chicago street gang, posted on social media were dramatically different from the 20-year-old whom Stanford sociologist Forrest Stuart got to know during his two ...

Substances associated with bee ferocity reported

Brazilian researchers may have discovered why Africanized honeybees are so aggressive. The scientists detected higher levels of certain chemical substances in the brains of Africanized honeybees than in gentler strains of ...

Sequenced fox genome hints at genetic basis of behavior

For nearly 60 years, the red fox has been teaching scientists about animal behavior. In a long-term experiment, foxes at the Russian Institute of Cytology and Genetics have been selected for tameness or aggression, recreating ...

Inside the brains of killer bees

Africanized honeybees, commonly known as "killer bees," are much more aggressive than their European counterparts. Now researchers have examined neuropeptide changes that take place in Africanized honeybees' brains during ...

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Aggression

In psychology, as well as other social and behavioral sciences, aggression refers to behavior between members of the same species that is intended to cause pain or harm. Predatory or defensive behavior between members of different species is not normally considered "aggression." Aggression takes a variety of forms among humans and can be physical, mental, or verbal. Aggression should not be confused with assertiveness, although the terms are often used interchangeably among laypeople, e.g. an aggressive salesperson.

There are two broad categories of aggression. These include hostile, affective, or retaliatory aggression and instrumental, predatory, or goal-oriented aggression. Empirical research indicates that there is a critical difference between the two, both psychologically and physiologically. Some research indicates that people with tendencies toward affective aggression have lower IQs than those with tendencies toward predatory aggression. If only considering physical aggression, males tend to be more aggressive than females. One explanation for this difference is that females are physically weaker than men, and so need to resort to other means.

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