According to the instinct approaches, the Boston Marathon bombers have an aggression that has an outcome of their inborn urges. Lorenz, an ethologist, said, “Aggressive energy constantly builds up in an individual until the person discharges it all in a process known as catharsis.” (pg.550) Basically, the bombers were continuously building up aggression towards people which lead them to the bombing to release all their aggression on everyone. Frustration-aggression approaches would say that the bombers were frustrated with a situation in the world with lead to anger, eventually leading to an extensive amount of aggression towards a subject. The observational learning approaches would suggest that the bombers learned their aggressions by watching