The concept of economic rationality is important for the historical evolution of Economics as a scientific discipline. The common idea about this concept -even between economists- is that it has a unique meaning which is universally accepted. This new volume argues that "economic rationality" is not not a universal concept with one single meaning, and that it in fact has different, if not conflicting, interpretations in the evolution of discourse on economics. In order to achieve this, the book traces the historical evolution of the concept of economic rationality from Adam Smith to the present, taking in thinkers from Mill to Friedman, and encompassing approaches from neoclassical to behavioural economics. The book charts this history in order to reveal important instances of conceptual transformation of the meaning of economic rationality. In doing so, it presents a uniquely detailed study of the historical change of the many faces of the homo oeconomicus .

This book is the result of a research project begun by the author in 1958 with the aim of answering two questions: First, what is the rationality of the economic systems that appear and disappear throughout history-in other words, what is their hidden logic and the underlying necessity for them to exist, or to have existed? Second, what are the conditions for a rational understanding of these systems-in other words, for a fully developed comparative economic science? The field of investigation opened up by these two questions is vast, touching on the foundations of social reality and on how to understand them. The author, being a Marxist, sought the answers, as he writes, 'not in philosophy or by philosophical means, but in and through examining the knowledge accumulated by the sciences.' The stages of his journey from philosophy to economics and then to anthropology are indicated by the divisions of his book. Godelier rejects, at the outset, any attempt to tackle the question of rationality or irrationality of economic science and of economic realities from the angle of an a priori idea, a speculative definition of what is rational. Such an approach can yield only, he feels, an ideological result. Rather, he treats the appearance and disappearance of social and economic systems in history as being governed by a necessity 'wholly internal to the concrete structures of social life.

The principal findings of experimental economics are that impersonal exchange in markets converges in repeated interaction to the equilibrium states implied by economic theory, under information conditions far weaker than specified in the theory. In personal, social, and economic exchange, as studied in two-person games, cooperation exceeds the prediction of traditional game theory. This book relates these two findings to field studies and applications and integrates them with the main themes of the Scottish Enlightenment and with the thoughts of F.A. Hayek.

This book concentrates upon how economic rationalities have been embedded into particular historical practices, cultures, and moral systems. Through multiple case-studies, situated in different historical contexts of the modern West, the book shows that the development of economic rationalities takes place in the meeting with other regimes of thought, values, and moral discourses. The book offers new and refreshing insights, ranging from the development of early economic thinking to economic aspects and concepts in the works of classical thinkers such as Thomas Hobbes, John Locke and Karl Marx, to the role of economic reasoning in contemporary policies of art and health care. With economic rationalities as the read thread, the reader is offered a unique chance of historical self-awareness and recollection of how economic rationality became the powerful ideological and moral force that it is today.

Standard economics theory is built on the assumption that human beings act rationally in their own self interest. But if rationality is such a reliable factor, why do economic models so often fail to predict market behavior accurately? According to Richard Thaler, the shortcomings of the standard approach arise from its failure to take into account systematic mental biases that color all human judgments and decisions.

The concept of rationality is the heart of modern economics. Neo-classical theory seems unable to proceed without assuming a rational agent seeking to find the optimal means to a well defined end. Yet many find this uncritical treatment of rationality problematic. It takes little account of culture history or creativity and consequently many economists find this insistence on rationality of little use when trying to explain a wide range of economic phenomena. Increasingly these include a large number of game theorists and others involved in mainstream theory as well as those typically opposed to neo-classicism. The Economics of Rationality contains a number of critical perspectives on the treatment of rationality in economics.

DIVEngelmann revisits Jeremy Bentham's work in the context of later liberal political theorists./div