In The Trauma of Birth9, Otto Rank rooted the whole process of repression in the trauma of birth. For Rank birth is the primal trauma. Once anchored, the anxiety of birth is the first barrier against the striving to return to the pleasure of the intrauterine state. That barrier is the primal repression, which Rank thereby gave a concrete content. Every later anxiety reproduces it, beginning with the child's fear of the dark and of being alone. Later repressions, including the forgetting of the earliest memories, repeat it. Rank carried the idea far beyond the clinic, tracing both the disparagement of women and philosophy's preoccupation with the problem of origins to primal repression. Freud answered him in Inhibitions, Symptoms and Anxiety. Against the birth trauma he set three factors: the infant's long helplessness, the interruption of sexual development, and the ego's limited means of defending itself against internal dangers.
Ronald Fairbairn moved the theory of repression onto the ground of object relations. In The Repression and the Return of Bad Objects10 (1943), he argued that what is repressed is in the first place not impulses or painful memories but bad objects that have been internalised. Impulses and memories are repressed because they are bound up with such objects.
The paper sets out two further ideas. The first is the moral defence. A child who depends on neglectful or abusive parents takes their badness into itself and becomes the guilty one so that they can remain good. The superego, formed from internalised good objects, is the agent of this defence, and guilt guards against the far more dreaded situation of being in the power of bad objects. The second concerns treatment. The deepest resistance in analysis is the fear of releasing these objects, sustained by the patient's libidinal attachment to them. The return of the repressed is the return of bad objects, which Fairbairn likened to possession, calling the psychotherapist a successor of the exorcist. Treatment must release them in the transference, once the analyst has become a sufficiently good object.
In Endopsychic Structure Considered in Terms of Object-Relationships11 (1944), Fairbairn went further and built his model of endopsychic structure on repression. Since one part of the ego can repress another, repression implies a multiplicity of egos. The central ego uses aggression to repress two others: a libidinal ego, bound to the exciting object, and an internal saboteur, later called the antilibidinal ego, bound to the rejecting object. The saboteur's attack on the libidinal ego is an indirect repression, which Fairbairn identified with the part of the process Freud had described. For Fairbairn, splitting of the ego and repression are one process, and aggression is its dynamic. The libidinal ego's attachment to its repressed object is a resistance in its own right, which helps to explain the negative therapeutic reaction.
Jean Laplanche, in New Foundations for Psychoanalysis12, tied primal repression to his general theory of seduction. The child tries to translate the enigmatic messages that adults address to it, and primal repression is the failure of that translation. What cannot be translated is left behind as the first unconscious contents. Julia Kristeva, in Powers of Horror13, linked abjection to primal repression. For her, the abject marks the subject's first, precarious separation from the archaic mother, before the distinction between subject and object is secured.