The following are among the causes of aggression:

a)INBORN TENDENCY Aggressiveness is an inborn tendency among human beings Biologically, this inborn tendency may be meant for self-defense.

b)PHYSIOLOGICAL MECHANISMS: Aggression can be indirectly triggered by the physiological arousal that occurs in the brain, a general physiological
state of arousal, or feeling activated, might often be expressed in the form of aggression.

c)CHILD-REARING: The way an individual is brought up often influences her/his aggressiveness.