Jeffrey P. KahnJeffrey P. Kahn, M.D. is Clinical Professor of Psychiatry at Weill-Cornell Medical College in Manhattan. This work on psychosis draws from research and clinical experience, and from academic interests in precision diagnosis, anxiety disorders and evolution. His book on evolutionary psychopathology (Angst: Origins of Anxiety and Depression, Oxford, 2012) included a preliminary overview of some ideas described here. He graduated from Swarthmore College and the Columbia University College of Physicians & Surgeons. Read More Read Less