Sigmund Freud is said to be the founder of psychoanalytic theory. Psychoanalytic theory is a method of investigating and treating personality disorders and is used in psychotherapy. Included in this theory is the idea that things that happen to people during childhood can contribute to the way they later function as adults. Freud believed that the mind is made of two parts - the conscious mind and the unconscious mind - and that the unconscious mind often prompts people to make certain decisions even if they don't recognize it on a conscious level.
Examples of psychoanalytic theory include:
These all help to illustrate how psychoanalytic theory works.