The monograph by G. M. Nazloyan sums up the author’s many years of work in the field of methodology and techniques of psychiatry. Based on a critical analysis of the most significant trends in clinical psychiatry, a number of new principles for understanding and treating the mentally ill are proposed. Theoretical and experimental research contributed to the formation of original methods of psychotherapy, the essence of which lies in the synthesis of science and fine art (conceptual psychotherapy). The book is intended for specialists in the field of psychiatry, psychology, and students of higher educational institutions of the relevant profile.