Developmental Theory Of Segmund Freud Segmund Freud (1856-1939) •An Austrian Neurologist •He is widely acknowledged as the father of modern psychology and the primary developer of the process of psychoanalysis. "The mind is like an iceberg, it floats with one-seventh of its bulk above the water," . Freud's Structure Model Freud's Structure Model • There are three working parts of human personality. ⮚ The Id (Instincts) ⮚ The Ego (person=nEGOtiator) ⮚ The Superego (society, conscience)