Sigmund Freud’s theory of personality is both relevant and non-relevant in today’s society. His theory of consciousness is very important as a foundation for understanding human thought and behavior. Freud looked beyond the effects of behavior and explored the unconscious.
Theories of Sigmund Freud Sigmund Freud was a Viennese doctor who was responsible for the introduction into the basic principles of psychology. He was born in 1856 and died in 1939 so lived through the Victorian era. He pioneered the investigation of psychological states through the investigating the patient's childhood.