Sigmund Freud +1939

Know about Sigmund Freud's triple-decker model of the human psyche: the id, ego, and superego Know about Sigmund Freud's triple-decker model of the human psyche: the id, ego, and superego (01:07) Learn about Sigmund Freud's model of the human psyche: ego, superego, and id. © Open University (A Britannica Publishing Partner)Sigmund Freud 1939: Sigmund Freud, the founder of modern psychoanalysis, died in London. [Test your knowledge of psychology.]