Schizophrenia is a serious, chronic and complex mental disorder. It can significantly disrupt the way a person feels, thinks and reacts to the world around them.This book places schizophrenia in an international evolutionary perspective from a clinical, psychopathological, psychiatric, neuropsychological and psychotherapeutic perspective.We propose here to study schizophrenia according to the psychodynamic-psychoanalytic approach of Eupen Bleuler (1911) and the neuropsychological and cognitive approach of C - D Frith (1992, 1996).If the influence of the great theoretical currents and their sometimes contradictory character always give rise to quarrels of schools, we present here the common and discordant points of these two theoretical conceptions (Bleuler, Frith) and brief reference to other authors having worked in this field as well as the atheoretical approach DSM-IV.Our research focused on books, books and academic papers, theses and dissertations, sites [MED], [...].This work can also be used as a research reference in academic work