DESC: Schizophrenia: A Scientific Delusion?, first published in 1990, made a very significant contribution to the debates on the concepts of schizophrenia and mental illness. These concepts remain both influential and controversial and this new updated second edition provides an incisive critical analysis of the debates over the last decade. As well as providing updated versions of the historical and scientific arguments against the concept of schizophrenia which formed the basis of the first edition, Boyle covers significant new material relevant to today's debates.