The history of madness and its treatment is a fascinating one. At one time, the mentally ill were diagnosed as demonically possessed; later, when mental illness became the province of psychoanalysts, those conditions that are actually physical in nature, such as schizophrenia or manic depression, went insufficiently treated, their sufferers consigned to asylums. In his book, A History of Psychiatry, Edward Shorter, a medical historian at the University of Toronto, presents a concise chronology of mental illness and its treatment. Shorter favors a biological understanding of these disorders, concentrating on medical approaches to helping the seriously mentally ill.