Causative Factors: Our study of causation in this case, as we intimated at first, is necessarily incomplete. But some things, probably explanatory, stand out very clearly. Heredity is moderately defective. Inez was the outcome of an unfortunate pregnancy and was a poorly developed infant. She suffered early from a number of illnesses, which, however, left no perceptible physical defects. Her unusual relationship to the other children, based on the difference in age, was perhaps a starting point for the development of her inventional theories of her own origin. She has given us many hints of this in speaking of her earliest remembrances of hearing the Smiths whispering something about adoption, and of her feeling that the other children were too old for her to belong to their family. Then we insist on the positive bearing which this woman's native traits have had in the production of her career. Her facility with language marks her as possessing one of the chief characteristics of the pathological liar. Added to this she showed the other personal traits which we have described in detail, leading to her success in misrepresenting herself. Her strongly developed physiognomy has caused many people to believe her older than she stated, but still one has seen such lineaments belonging to girls of 17. The bearing which the accident at 18 had upon the case it is impossible for us to estimate. Her family are very clear on this point; they maintain that all her bad conduct has developed since then. Through unwillingness, or barely possibly real amnesia for the injury, Inez has not helped us to know the facts. Dr. Augusta Bronner, who has studied this case with me, cleverly suggests that just as anyone becomes confused in distinguishing really remembered experiences from what has been told by others was one's experience, so Inez gets confused between what has really happened and what she herself has told as having happened. This finally involves a pathological liar in a network which is difficult to untangle. Part of the causation of the present lying, then, is the extensive lying which has been done previously.