By Patricia Fersch

Aggression is defined as a form of physical or verbal behavior leading to self- assertion; it is often angry and destructive and intended to be injurious, physically or emotionally and aimed at domination of one person by another. It may arise from innate drives and/or be a response to frustration and may be manifested by overt attacking and destructive behavior, by covert attitudes of hostility and obstructionism, or by a healthy self-expressive drive to mastery.