Because most psychiatric illnesses are complex phenomena, no single method or approach is sufficient to explain them or the experiences of persons who suffer from them. In The Concepts of Psychiatry S. Nassir Ghaemi, M.D. argues that the discipline of psychiatry can therefore be understood best from a pluralistic perspective. Grounding his approach in the works of Paul McHugh, Phillip Slavney, Leston Havens, and others, Ghaemi incorporates a more explicitly philosophical discussion of the strengths of a pluralistic model and the weaknesses of other approaches, such as biological or psychoanalytic theories, the biopsychosocial model, or eclecticism.

Ghaemi's methodology is twofold: on the one hand, he applies philosophical ideas, such as utilitarian versus duty-based ethical models, to psychiatric practice. On the other hand, he subjects clinical psychiatric phenomena, such as psychosis or the Kraepelin nosology, to a conceptual analysis that is philosophically informed. This book will be of interest to professionals and students in psychiatry, as well as psychologists, social workers, philosophers, and general readers who are interested in understanding the field of psychiatry and its practices at a conceptual level.

This is the first book-length historical critique of psychiatry's mainstream ideology, the biopsychosocial (BPS) model.

Developed in the twentieth century as an outgrowth of psychosomatic medicine, the biopsychosocial model is seen as an antidote to the constraints of the medical model of psychiatry. Nassir Ghaemi details the origins and evolution of the BPS model and explains how, where, and why it fails to live up to its promises. He analyzes the works of its founders, George Engel and Roy Grinker Sr., traces its rise in acceptance, and discusses its relation to the thought of William Osler and Karl Jaspers.

In assessing the biopsychosocial model, Ghaemi provides a philosophically grounded evaluation of the concept of mental illness and the relation between evidence-based medicine and psychiatry. He argues that psychiatry's conceptual core is eclecticism, which in the face of too much freedom paradoxically leads many of its adherents to enact their own dogmas. Throughout, he makes the case for a new paradigm of medical humanism and method-based psychiatry that is consistent with modern science while incorporating humanistic aspects of the art of medicine.

Ghaemi shows how the historical role of the BPS model as a reaction to biomedical reductionism is coming to an end and urges colleagues in the field to embrace other, less-eclectic perspectives.