In Freudian psychoanalysis, super-ego is one of the three primary constructs composing the human mind. It was put forth by Sigmund Freud. Technically, the ego is the entity which is considered to be comprised of societal restrictions and taboos, and exerts its control over the id, the primal desires of the mind, via the ego. The super-ego is considered to be a father-figure of sorts, and considered to be created during the recession of the Oedipus complex in psychosexual development.
Although much of Freud's theory is considered to be outmoded by modern psychologists and doctors, the entities which he suggested have become somewhat engrained in modern society, and are frequently invoked by laymen to be able to gain a better, though superficial, understanding of the psychoanalytical conceptualization of the human mind.