Freud's model of the Id, Ego, and Superego

Freud compared human mind to an iceberg, which is divided in to three parts: conscious (the small part that shows above the surface of water which represents our current awareness), preconscious (a small part below the surface of water which represents information which is present but not currently used, e.g. the name of a U.S. president) and unconscious (the much larger mass of the iceberg below the water which represents a storage of impulses, wishes and inaccessible memories that affect our thoughts and behavior).

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