This document discusses different theories of aggression. It summarizes instinct theories which view aggression as an innate urge released through catharsis. Frustration-aggression theory sees aggression as a reaction to frustration when goals are blocked. Observational learning theory emphasizes that aggression can be learned through observing and imitating models who are rewarded for aggressive behavior. The document also provides strategies for dealing with anger effectively such as calming down, reinterpreting situations, and using relaxation techniques.