Research paper from 2003 in the field of Psychology - Personality Psychology, grade: very good (1), Carl von Ossietzky University Oldenburg, language: German. Abstract: The distinction between consciousness and unconsciousness and the resulting three-level structure of the human psyche into Id, Ego, and Superego is perhaps the most well-known theory of psychoanalysis. It is most commonly associated with Sigmund Freud, along with dream interpretation, and forms the foundation of his school of thought. The drive conflicts and repressions occurring in the unconscious influence human behavior. The unconscious can manifest itself consciously, for example, through dreams or neuroses. Freud, who is regarded as the discoverer of the unconscious, believed that the unconscious consists of repressed childhood experiences, traumatic memories, and tabooed desires.