Leonard Berkowitz revises the Frustration-Agression Thoery (jan 1, 1978 – jan 1, 1989)
Description:
the original definition of this theory was that frustration always precedes aggression, and that frustration always leads to aggression. The revisitation is that frustration leads to a type of aggression only when the person is upset by something, not merely frustrated, but frustration is a necessary component to aggression.https://en.wikipedia.org/wiki/Frustration%E2%80%93aggression_hypothesis
Added to timeline:
Date:
jan 1, 1978
jan 1, 1989
~ 11 years