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Unconscious

The concept of the unconscious, which Freud regarded as already well known amongst poets, was important to his theories and ideas; he also believed that it was his responsibility to ensure that it received scientific recognition in the field of psychology.

Freud states explicitly that his concept of the unconscious as he first formulated it was based on the theory of repression. In his formulations of the concept of repression in his 1915 paper 'Repression' (Standard Edition XIV) Freud introduces the distinction in the unconscious between primary repression linked to the universal taboo on incest ('innately present originally') and repression ('after expulsion') that was a product of an individual's life history ('acquired in the course of the ego's development') in which something that was at one point conscious is rejected or eliminated from consciousness.

In his account of the development and modification of his theory of unconscious mental processes he sets out in his 1915 paper 'The Unconscious' (Standard Edition XIV), Freud identifies the three perspectives he employs: the dynamic, the economic and the topographical.

The dynamic perspective concerns firstly the constitution of the unconscious by repression and secondly the process of "censorship" which maintains unwanted, anxiety-inducing thoughts as such. Here Freud is drawing on observations from his earliest clinical work in the treatment of hysteria.

In the economic perspective the focus is on the trajectories of the repressed contents ("the vicissitudes of sexual impulses") as they undergo complex transformations in the process of both symptom formation and normal unconscious thought such as dreams and slips of the tongue. These were topics Freud explored in detail in The Interpretation of Dreams and The Psychopathology of Everyday Life.

Whereas both these former perspectives focus on the unconscious as it is about to enter consciousness, the topographical perspective represents a shift in which the systemic properties of the unconscious, its characteristic processes, and modes of operation such as Condensation and Displacement, are placed in the foreground.

This "first topography" presents a model of psychic structure comprising three systems:

In his later work, notably in The Ego and the Id (1923), a second topography is introduced comprising id, ego and super-ego, which is superimposed on the first without replacing it. In this later formulation of the concept of the unconscious the id comprises a reservoir of instincts or drives, a portion of them being hereditary or innate, a portion repressed or acquired. As such, from the economic perspective, the id is the prime source of psychical energy and from the dynamic perspective it conflicts with the ego and the super-ego which, genetically speaking, are diversifications of the id.