What did Sigmund Freud do and when did he do it?

Answer 1

Freud created the method known as psychoanalysis for investigating and treating the mind.

Answer 2

Sigmund Freud was an Austrian neurologist who founded psychoanalysis, a clinical method for treating psychopathology through dialogue between a patient and a psychoanalyst. He developed his theories and techniques in the late 19th and early 20th centuries, with his most influential works published between the 1890s and 1930s.