Famous philosophies

Lawrence Kohlberg (1927-1987) Nationality: American Known for: Theory of stages of moral development Kohlberg is credited with creating the field of “moral development” in psychology while he worked on extending the findings of Jean Piaget. His “stages of moral development” explored how children react to various moral dilemmas, taking into account their age. He stated six stages of moral reasoning with his theory.	Philip Zimbardo (1933- ) Nationality: American Known for: Stanford prison study Zimbardo is known for a variety of reasons, including his published books regarding psychology. The Lucifer Effect may be his best known and it explores the theory of how good people change to evil. His main idea in the book is that good people often do bad things based on a given situation.
Stanley Milgram (1933-1984) Nationality: American Known for: Studied the effects of authority on obedience One of Milgram’s greatest studies was inspired by the Holocaust and the trial of one of its main participants- Adolf Eichmann. He wanted to study how far humans would go to carry out orders if an authority figure told them to do so. His peer shock experiment was very controversial, but it is a milestone in the field of psychology.
Paul Ekman (1934- ) Nationality: American Known for: Studied emotions and related facial expressions Given the title of the “best human lie detector in the world,” Paul Ekman established an “atlas of emotions” which links a particular emotion to the facial expressions that people make when they experience that emotion. His breakthrough discovery is the “micro-expression.”