for her treatment). In the course of talking in this way, her symptoms became reduced in severity as she retrieved memories of traumatic incidents associated with their onset. The inconsistent results of Freud's early clinical work eventually led him to abandon hypnosis, having concluded that more consistent and effective symptom relief could be achieved by encouraging patients to talk freely, without censorship or inhibition, about whatever ideas or memories occurred to them. In conjunction with this procedure, which he called "free association", Freud found that patients' dreams could be fruitfully analyzed to reveal the complex structuring of unconscious material and to demonstrate the psychic action of repression which, he had concluded, underlay symptom formation. By 1896 he was using the term "psychoanalysis" to refer to his new clinical method and the theories on which it was based. Freud's development of these new theories took place during a period in which he experienced heart irregularities, disturbing dreams and periods of depression, a "neurasthenia" which he linked to the death of his father in 1896 and which prompted a "self-analysis" of his own dreams and memories of childhood. His explorations of his feelings of hostility to his father and rivalrous jealousy over his mother's affections led him to fundamentally revise his theory of the origin of the neuroses. Based on his early clinical work, Freud postulated that unconscious memories of sexual molestation in early childhood were a necessary precondition for psychoneuroses (hysteria and obsessional neurosis), a formulation now known as Freud's seduction theory. In the light of his self-analysis, Freud abandoned the theory that every neurosis can be traced back to the effects of infantile sexual abuse, now arguing that infantile sexual scenarios still had a causative function, but it did not matter whether they were real or imagined and that in either case, they became pathogenic only when acting as repressed memories. This transition from the theory of infantile sexual trauma as a general explanation of how all neuroses originate to one that presupposes autonomous infantile sexuality provided the basis for Freud's subsequent formulation of the theory of the Oedipus complex. Freud described the evolution of his clinical method and set out his theory of the psychogenetic origins of hysteria, demonstrated in several case histories, in Studies on Hysteria published in 1895 (co-authored with Josef Breuer). In 1899, he published The Interpretation of Dreams in which, following a critical review of