A whiff of tears reduces male aggression, says study

Watching someone cry often evokes an emotional response—but according to a new study published Thursday, human tears themselves contain a chemical signal that reduces brain activity linked to aggression.

Researchers identify molecular mechanism of cancer invasion

A cancerous tumor is the accumulation of cells uncontrollably dividing, some of which can invade other parts of the body. The process is difficult to predict in detail, and eradicating the cells poses even greater difficulty.

Female Gila monster fights surprisingly violent, study finds

A new study published on May 10 in the journal Royal Society Open Science has shown that in the Gila monster, a large venomous lizard, encounters between females are far more intense and violent than interactions between ...

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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 humiliation, pain, or harm. Ferguson and Beaver (2009) defined aggressive behavior as "Behavior which is intended to increase the social dominance of the organism relative to the dominance position of other organisms" . 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 exists on a continuum with what is commonly called assertiveness, although the terms are often used interchangeably among laypeople, e.g. an aggressive salesperson.

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