For other usage, see Aggression
In psychology and other social and behavioral sciences, aggression refers to behavior that is intended to cause harm or pain. Aggression can be either physical or verbal. Behavior that accidentally causes harm or pain is not aggression. Property damage and other destructive behavior may also fall under the definition of aggression. Aggression is not the same thing as assertiveness.
Types of aggression
Aggression is a complex phenomenon that is composed of a number of more specific types of behavior.
Moyer (1968)Moyer, KE. 1968. Kinds of aggression and their physiological basis. Communications in Behavioral Biology 2A:65-87. presented an early and influential classification of seven different forms of aggression, from a biological and evolutionary point of view.
Predatory aggression: attack on prey by a predator.
Inter-male aggression: competition between males of the same species over access to resources such as females, domi