<p>2019 Reprint of Volume One Only of the 1925 Edition.&nbsp; Volume Two published separately with ISBN&nbsp;978-1-68422-413-5 and available from Martino Fine Books. &nbsp;Full facsimile of the original edition not reproduced with Optical Recognition software.&nbsp; Pierre Janet&#39;s therapeutic approach to traumatized patients was the first attempt to create a systematic phase-oriented treatment of post-traumatic stress. Janet viewed the trauma response basically as a disorder of memory which interfered with effective action. Relying heavily on the use of hypnosis he taught that the treatment of post-traumatic psychopathology consisted of forming a stable therapeutic relationship; retrieving and transforming traumatic memories into meaningful experiences; and taking effective action to overcome learned helplessness. Most of his observations and recommendations are as pertinent today as when he first made them more than a century ago.&nbsp;</p><p>Janet was a pioneering French psychologist philosopher and psychotherapist in the field of dissociation and traumatic memory.&nbsp; It was claimed that Freud borrowed freely from Janet perhaps without sufficient attribution. He is ranked alongside William James and Wilhelm Wundt as one of the founding fathers of psychology.</p>