Personal construct theory
1940s Gestalt therapy is founded, introducing the notion that perception influences meaning.
1955 George Kelly publishes The Psychology of Personal Constructs, outlining the theory that everyone has a set of constructs (beliefs) about the world and the people in it.
1960 Psychologist and statistician Max Hamilton constructs the Hamilton Depression Rating Scale (HAM-D), a tool used to measure clinical depression.
1980 Psychologist Melvin Lerner publishes The Belief in a Just World: A Fundamental Delusion, explaining how we wrongly believe that people get what they deserve.
If people could stop blaming ...