Ludwig von Bertalanffy, a distinguished biologist, occupies an important position in the intellectual history of the twentieth century. His contribut… - Thaddeus E. Weckowicz

As indicated by its title "A History of Great Ideas in Abnormal Psychology", this book is not just concerned with the chronology of events or with biographical details of great psychiatrists and psychopathologists. It has as its main interest, a study of the ideas underlying theories about mental illness and mental health in the Western world. These are studied according to their historical development from ancient times to the twentieth century. The book discusses the history of ideas about the nature of mental illness, its causation, its treatment and also social attitudes towards mental illness. The conceptions of mental illness are discussed in the context of philosophical ideas about the human mind and the medical theories prevailing in different periods of history. Certain perennial controversies are presented such as those between the psychological and organic approaches to the treatment of mental illness, and those between the focus on disease entities (nosology) versus the focus on individual personalities. The beliefs of primitive societies are discussed, and the development of early scientific ideas about mental illness in Greek and Roman times. The study continues through the medieval age to the Renaissance. More emphasis is then placed on the scientific revolution of the seventeenth century, the enlightenment of the eighteenth, and the emergence of modern psychological and psychiatric ideas concerning psychopathology in the twentieth century.

Another influence of that period was the philosophy of of . Von Bertalanffy met Vaihinger in Vienna and for a time, as a student, lived in his house.10 According to the philosophy of Idealistic Positivism absolute truths and ideal norms of human conduct did not exist, rather man created them as fictions important for the individual and social survival. The idea of relativity of truths and norms postulated by Vainhinger bore a similarity to the relativism of different points of view and categories of thinking postulated by Nicholas of Cusa. The philosophies of Cusanus and Vaihinger were undoubtedly instrumental in shaping von Bertalanffy's 'perspectivist' epistemology and his idea of relativity of categories.

The fourth model of mind, closely related to the previous one, is the structuralist model, as represented by Piaget, Chomsky, Levi-Strauss, and the structural-developmental version of the psychoanalytical theory. This model assumes the presence of innate structures or potentialities to develop such structures. These structures are not directly experienced or observed; rather, they are inferred from the organization of cognitive processes and behaviour and also from the regularity and orderliness of development. The development proceeds through The development proceeds through well defined stages. There are two versions of the structuralist development model. In the preformist version, the structures exist in potential form at birth and only actualize themselves in the maturation-development process. In the epigenetic version, the structures develop in a dialectic interaction with the environment. The final outcome us not completely determined at births but also depends on the environmental factors.