The first attack, or act of hostility; the first act of injury, or first act leading to a war or a controversy; unprovoked attack; assault; as, a war of aggression. "Aggressions of power."

Anger or aggression is a key emotion necessary to our personal survival in our environment. In psychology it is understood from a biological point of view. The hormonal hypothesis regards aggression suggests that the male sex hormone androgen (testosterone) plays its part. As do other hormones such as adrenaline and progesterone (Kreuz and Rose, 1972). Our environment also plays its part. There are links between alcohol consumption and aggression, the weather and aggression, and environmental stressors and aggression (Keegan, 2002).

Initiating and acting with hostile behaviors. A behavior aimed at causing either physical or psychological pain by biting, hitting, and /or throwing objects.(one's anger, one is)

Any behavior or action that involves the intention to harm someone else. go to glossary index