The return of the sexual activity is determined by inner and outer causes which can be conjectured from the formation of the symptoms of neurotic diseases and definitely revealed by psychoanalytic investigations. The internal causes will be discussed later, the accidental outer causes attain at this time a great and permanent significance. As the first outer cause we have the influence of seduction which prematurely treats the child as a sexual object; under conditions favoring impressions this teaches the child the gratification of the genital zones, and thus usually forces it to repeat this gratification in onanism. Such influences can come from adults or other children. I cannot admit that I overestimated its frequency or its significance in my contributions to the etiology of hysteria,[17] though I did not know then that normal individuals may have the same experiences in their childhood, and hence placed a higher value on seductions than on the factors found in the sexual constitution and development.[18] It is quite obvious that no seduction is necessary to awaken the sexual life of the child, that such an awakening may come on spontaneously from inner sources. *Polymorphous-perverse Disposition.*--It is instructive to know that under the influence of seduction the child may become polymorphous-perverse and may be misled into all sorts of transgressions. This goes to show that it carries along the adaptation for them in its disposition. The formation of such perversions meets but slight resistance because the psychic dams against sexual transgressions, such as shame, loathing and morality--which depend on the age of the child--are not yet erected or are only in the process of formation. In this respect the child perhaps does not behave differently from the average uncultured woman in whom the same polymorphous-perverse disposition exists. Such a woman may remain sexually normal under usual conditions, but under the guidance of a clever seducer she will find pleasure in every perversion and will retain the same as her sexual activity. The same polymorphous or infantile disposition fits the prostitute for her professional activity, and in the enormous number of prostitutes and of women to whom we must attribute an adaptation for prostitution, even if they do not follow this calling, it is absolutely impossible not to recognize in their uniform disposition for all perversions the universal and primitive human.