It first attaches to all persons to whom he is accustomed, but soon these give way in favor of his parents. The relation of the child to his parents is, as both direct observation of the child and later analytic investigation of adults agree, not at all free from elements of sexual accessory-excitation (Miterregung). The child takes both parents, and especially one, as an object of his erotic wishes. Usually he follows in this the stimulus given by his parents, whose tenderness has very clearly the character of a sex manifestation, though inhibited so far as its goal is concerned. As a rule, the father prefers the daughter, the mother the son; the child reacts to this situation, since, as son, he wishes himself in the place of his father, as daughter, in the place of the mother. The feelings awakened in these relations between parents and children, and, as a resultant of them, those among the children in relation to each other, are not only positively of a tender, but negatively of an inimical sort. The complex built up in this way is destined to quick repression, but it still exerts a great and lasting effect from the unconscious. We must express the opinion that this with its ramifications presents the nuclear complex of every neurosis, and so we are prepared to meet with it in a not less effectual way in the other fields of mental life. The myth of King Œdipus, who kills his father and wins his mother as a wife is only the slightly altered presentation of the infantile wish, rejected later by the opposing barriers of incest. Shakespeare's tale of Hamlet rests on the same basis of an incest complex, though better concealed. At the time when the child is still ruled by the still unrepressed nuclear complex, there begins a very significant part of his mental activity which serves sexual interest. He begins to investigate the question of where children come from and guesses more than adults imagine of the true relations by deduction from the signs which he sees. Usually his interest in this investigation is awakened by the threat to his welfare through the birth of another child in the family, in whom at first he sees only a rival. Under the influence of the partial impulses which are active in him he arrives at a number of "infantile sexual theories," as that the same male genitals belong to both sexes, that children are conceived by eating and born through the opening of the intestine, and that sexual intercourse is to be regarded as an inimical act, a sort of overpowering.
But just the unfinished nature of his sexual constitution and the gaps in his knowledge brought about by the hidden condition of the feminine sexual canal, cause the infant investigator to discontinue his work as a failure. The facts of this childish investigation itself as well as the infant sex theories created by
