*Adhesion.*--The significance of all premature sexual manifestations is enhanced by a psychic factor of unknown origin which at present can be put down only as a psychological preliminary. I believe that it is the _heightened adhesion_ or _fixedness_ of these impressions of the sexual life which in later neurotics, as well as in perverts, must be added for the completion of the other facts; for the same premature sexual manifestations in other persons cannot impress themselves deeply enough to repeat themselves compulsively and to succeed in prescribing the way for the sexual impulse throughout later life. Perhaps a part of the explanation for this adhesion lies in another psychic factor which we cannot miss in the causation of the neuroses, namely, in the preponderance which in the psychic life falls to the share of memory traces as compared with recent impressions. This factor is apparently dependent on the intellectual development and grows with the growth of personal culture. In contrast to this the savage has been characterized as "the unfortunate child of the moment."[15] Owing to the oppositional relation existing between culture and the free development of sexuality, the results of which may be traced far into the formation of our life, the problem how the sexual life of the child evolves is of very little importance for the later life in the lower stages of culture and civilization, and of very great importance in the higher. *Fixation.*--The influence of the psychic factors just mentioned favored the development of the accidentally experienced impulses of the infantile sexuality. The latter (especially in the form of seductions through other children or through adults) produce the material which, with the help of the former, may become fixed as a permanent disturbance. A considerable number of the deviations from the normal sexual life observed later have been thus established in neurotics and perverts from the beginning through the impressions received during the alleged sexually free period of childhood. The causation is produced by the responsiveness of the constitution, the prematurity, the quality of heightened adhesion, and the accidental excitement of the sexual impulse through outside influence. The unsatisfactory conclusions which have resulted from this investigation of the disturbances of the sexual life is due to the fact that we as yet know too little concerning the biological processes in which the nature of sexuality consists to form from our isolated examinations a satisfactory theory for the explanation of either the normal or the pathological. [1] The differences will be emphasized in the schematic representation given in the text. To what extent the infantile sexuality approaches the definitive sexual organization through its object selection has been discussed before (p. 60).