Routledge is now re-issuing this prestigious series of 204 volumes originally published between 1910 and 1965. The titles include works by key figures such asC.G. Jung, Sigmund Freud, Jean Piaget, Otto Rank, James Hillman, Erich Fromm, Karen Horney and Susan Isaacs. Each volume is available on its own, as part of a themed mini-set, or as part of a specially-priced 204-volume set. A brochure listing each title in the "International Library of Psychology" series is available upon request.

First Published in 1999. This is Volume XXI of twenty-eight in the Psychoanalysis series. Written in 1927 this study looks as the problems of psychopathology with particular focus on Freud.

This scarce antiquarian book is a selection from Kessinger Publishing's Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the world's literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone!

This scarce antiquarian book is a selection from Kessinger PublishingAcentsa -a centss Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the world's literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for e

This is a pre-1923 historical reproduction that was curated for quality. Quality assurance was conducted on each of these books in an attempt to remove books with imperfections introduced by the digitization process. Though we have made best efforts - the books may have occasional errors that do not impede the reading experience. We believe this work is culturally important and have elected to bring the book back into print as part of our continuing commitment to the preservation of printed works worldwide.

MEDICAL PSYCHOLOGY AND PSYCHICAL RESEARCH T. W. MITQHELL, M. D. PRESIDENT OF THE SOCIETY FOR PSYCHICAL RESEARCH AUTHOR OF THE PSYCHOLOGY OF MEDICINE METHUEN CO. LTD. 36 ESSEX STREET W. C. LONDON PREFACE THIS book deals with those branches of Medical Psychology which have thrown most light on the problems of Psychical Research, namely, Hypno tism, Hysteria, and Multiple Personality. The greater part of the contents has already been published in the form of papers contributed to the Proceedings of the Society for Psychical Research during the last fifteen years. The Appreciation of Time by Somnambules Chapter I appeared in 1907 A Study in Hysteria Chapter II in 1912 The Doris Fischer Case of Multiple Personality Chapter V in 1920 these papers are reprinted here almost unaltered. The substance of Chapters III, IV, and VI was embodied in a paper entitled Some Types of Multiple Personality which appeared in Proceedings, S. P. R. in 1912 but in the present book considerable additions to the original paper have been made. The greater part of Chapter IV in which is described what I have called the Jekyll and Hyde type of double person ality, and also part of Chapter VI, are now published for the first time. I desire to express my thanks to the Council of the Society for Psychical Research for permission to republish papers contributed by me to the Proceedings of that Society. T. W. M. HADLOW, KENT August, 1922 v CONTENTS CHAP. PAG I THE APPRECIATION OF TIME BY SOMNAMBULES . i II A STUDY IN HYSTERIA ..... 69 III MULTIPLE PERSONALITY ..... 103 IV MULTIPLE PERSONALITY Continued . . 139 V THE DORIS FISCHER CASE OF MULTIPLE PERSON ALITY ........ 168 VI BODY AND SOUL IN MULTIPLE PERSONALITY . 214INDEX 241 vii MEDICAL PSYCHOLOGY AND PSYCHICAL RESEARCH CHAPTER I THE APPRECIATION OF TIME BY SOMNAMBULES MANY classifications of the different stages of hypnosis have been put forward, and it is difficult to find two authors who are in agreement as to how many stages may be recognized, or by what names they are to be known. All hypnotic subjects, however, may be divided into two great groups, according to whether the events of hypnosis are forgotten or not in the waking state and the term somnambule has been very generally used to describe those who, when hypnosis is terminated, are totally amnesic for all that has happened during the trance. Although some interesting observations in regard to appreciation of time may be made in the lighter stages of hypnosis, it is in somnambules that this power is most strikingly shown and may be most conveniently studied. All the observations recorded or referred to in this paper were made on somnambules, and with regard to my own cases I can declare with the greatest certainty that in every instance post-hypnotic amnesia was complete. Every one who has done much practical hypnotic work i i 2 MEDICAL PSYCHOLOGY must have observed the accuracy with which somnambules estimate time-intervals. If a somnambule is told in hypnosis to sleep for five minutes, ten minutes, or half an hour, and then wake up, it is found that awakening takes place exactly at the time mentioned, or that, if there is an error in the time-estimation, it is generally a very small one. It is also well known that this power of estimating time-intervals may persist into post-hypnotic life, so that an action suggested in hypnosis, to be per formed in waking life after a certaininterval, is generally fulfilled at the appointed time, notwithstanding that all knowledge of the suggestion is absent from the waking consciousness during the intervening period. Although this association with the hypnotic state of what appears to be a supernormal power is well worthy of investigation, we possess very few detailed records of observations which might help us in elucidating the many difficulties which confront us when we try to bring the facts into line with our ordinary psychological beliefs...