In other words, it is often the case that one person is capable of experiencing both aspects. Therefore, Freud concludes, it is often the case that impulses to perversions often appear in pairs. Such correspondences in one person, he continues, may be due to the bisexuality of humans. Perversion, Freud notes, are not cases of degeneracy nor disease. That is, these extensions are constituents which are rarely absent from the sexual life of normal people and are judged by them as not different from other intimate events.
Mental resistances exist and include such affects as shame, disgust and so on.
Each of these factors, Freud says, has a role in restraining the sexual instinct to its normal expressions. Some perversions are only made intelligible if we assume the convergence of several motive forces. Psychoanalysis is described as a means to gaining information that is not false. Therefore the sexual life of such people is expressed by such symptoms. The removal of hysterical symptoms proceeds through the assumption that such symptoms are substitutes for a number of emotionally cathected mental processes, wished and desires, which, through repression, have been prevented discharge in terms of psychical activity that is admissible by consciousness.