Aggression is the result of frustration. Frustration leads to the arousal of an aggressive drive, which leads to aggressive behaviour, consequently relieving the aggressive urges (catharsis).
When it is inappropriate to behave aggressively towards thesource of frustration, aggressiveness towards it is inhibited but may be displaced onto someone or something else
Frustration is only one of many different types of unpleasant experience that can lead to aggression. These experiences create negative feelings in the individual and it is these, rather than the frustration, that triggers aggressive behaviour.
Anything that interferes with our ability to reach an anticipatedgoal is experienced as an unpleasant experience, which may produce anger. The nature of the frustrating event is less important than how negative the resulting effect is
An increase in hostileattitudes towards the French, as a result of passenger’s frustration when their ferry was blocked by French, protesting fishermen