[On the Psychosexual Stages of Development]
We shall give the name of "pregenital" to organizations of sexual life in which the genital zones have not yet taken over their predominant part. We have hitherto identified
two such organizations, which almost seem as though they were harking back to early animal forms of life.
The first of these is the oral or, as it might be
called, cannibalistic pregenital sexual organization. Here sexual activity has not yet been separated from the ingestion of food; nor are opposite currents within the activity differentiated. The object of both
activities is the same; the sexual aim consists in the incorporation of the object - the prototype of a process which, in the form of identification, is later to play such an important psychological part. A relic of
this constructed phase of organization, which is forced upon our notice by pathology, may be seen in thumb-sucking, in which the sexual activity, detached from the nutritive activity, has substituted for the extraneous
object one situated in the subject's own body.
A second pregenital phase is that of the sadistic-anal organization. Here the opposition between two currents, which runs through all sexual life, is already developed:
they cannot yet, however, be described as "masculine" and "feminine", but only as "active" and "passive". The activity is put into operation by the instinct for mastery through the agency of the somatic musculature; the
organ which, more than any other, represents the passive sexual aim is the erotogenic mucous membrane of the anus. Both of these currents have objects, which, however, are not identical. Alongside these, other component
instincts operate in an auto-erotic manner. In this phase, therefore, sexual polarity and an extraneous object are already observable. But organization and subordination to the reproductive function are still absent.
In order to complete our picture of infantile sexual life, we must also suppose that the choice of an object, such as we have shown to be characteristic of the pubertal phase of development, has already
frequently or habitually been effected during the years of childhood: that is to say, the whole of the sexual currents have become directed towards a single person in relation to whom they seek to achieve their aims.
This then is the closest approximation possible in childhood to the final form taken by sexual life after puberty. The only difference lies in the fact that in childhood the combination of the component instincts and
their subordination under the primacy of the genitals have been effected only very incompletely or not at all. Thus the establishment of that primacy in the service of reproduction is the last phase through which the
organization of sexuality passes.
At a later date (1923), I myself modified this account by inserting a third phase in the development of childhood, subsequent to the two pregenital
organizations. This phase, which already deserves to be described as genital, presents a sexual object and some degree of convergence of the sexual impulses upon that object; but it is differentiated from the final
organization of sexual maturity in one essential respect. For it knows only one kind of genital: the male one. For that reason I have named it the 'phallic' stage of organization. (From Sigmund Freud: Three Essays on
the Theory of the Sexuality, 1905.)
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