Famous philosophies

Jean Piaget (1896-1980)
Nationality: Swiss
Known for: Formulating the theory of cognitive development
Piaget worked closely with children to study their thought processes and how they differed from adults. He also contributed to the field of developmental psychology and many of his theories and ideas are still relevant today.

Lev Vygotsky (1896-1934) Nationality: Soviet Belarusian Known for: Founder of the theory of cultural-historical psychology As a Russian psychologist, much of Vygotsky’s works were criticized and oppressed by the Communists. This left many of his idea inaccessible for the Western world to study. But he was heavily influential in the field of educational psychology and many of his ideas are still being studied today.	Erich Fromm (1900-1980) Nationality: German Known for: Society’s effects on the human psyche Fromm published works that dealt with political psychology and his theory on the human character. His main idea was the freedom most important aspect of human nature. He also categorized three ways that humans use to escape from freedom, including destructiveness, authoritarianism, and automaton conformity.	Jacques Lacan (1901-1981) Nationality: French Known for: Formulated the “mirror stage” of psychoanalysis Lacan’s “mirror stage” is a point in the life of a person’s development in which they are at a turning point. It also signifies a strong relationship with their body image. Lacah is also known for theorizing the “three orders,” which include the imaginary, the symbolic, and the real.