The lying, as in all these cases, seemed undertaken sometimes for the advantages which thereby might accrue. On the other hand, at times the falsification seemed to have no relation to personal advantages. Indeed, this girl had experience, many times repeated, that her lying very quickly resulted in suffering to her. There were aspects of her falsifications which made it seem as if there was pleasure in the mere manufacture of the stories themselves and in the living, even for a short time, in the situations which she had created out of her imagination and communicated to others. Frequently there seemed to be an unwillingness on her part to face the true facts of existence. In her representation of things as different from what they really were she seemed to show even the desire for self-deception. Another point: no student of cases of this kind should allow himself to forget the potency of habit formation. There can be little doubt but that a large share of this girl's conduct was the result of her well developed and long maintained tendency to trim the facts. As far as we were able to determine, and we undoubtedly got at the essential facts, this girl's falsifying trait was based on the following: The fact that she came of neuropathic stock would make us think that she possibly inherited an unstable mental make-up. To be sure, the only evidence of it was in this anomalous characteristic of hers, namely, her pathological lying. She seemed sound in her nervous makeup. The idea that the grandmother passed on as inheritance her prevaricating traits is open to discussion, but we have seen that environmental influences from this source may have been the only effect, if there was any at all. Very important in this case, without any doubt, is the early sex teaching, its repression and the mental conflict about it for years, and then the reintroduction into the subject just before puberty. Probably this is the vital point of the girl's whole career. The success she early achieved in deceiving her mother, not by denials, but by the elaboration of imaginary situations, has been the chief determinant of her unfortunate behavior. Added to that was the formation of a habit and of an attitude towards life in which the stern realities were evaded by the interposition of unrealities. Even the affair of the imaginary social gathering can be conceived in this light, for evidently she and her family were not engaged then in social affairs and the preparation for a gay event would for a time be a source of excitement and pleasure. Her autoeroticism may have helped towards the production of phantasies and the general tendency to evasion of the realities of life.