This book is an examination of the nature of economic explanation. The opening chapters introduce current thinking in the philosophy of science and review the literature on methodology. Professor Blaug then turns to the troublesome question of the logical status of welfare economics, giving the reader an understanding of the outstanding issues in the methodology of economics. This is followed by a series of case studies of leading economic controversies, which shows how controversies in economics may be illuminated by paying (...) attention to questions of methodology. A final chapter draws the strands together and gives the author's view of what is wrong with modern economics. This book is a revised and updated edition of a classic work on the methodology of economics, in which Professor Blaug develops his discussion of the latest developments in macroeconomics, general equilibrium theory and international trade theory. A new section on the rationality postulate is also added. (shrink)

This article shows how the MISS account of models—as isolations and surrogate systems—accommodates and elaborates Sugden’s account of models as credible worlds and Hausman’s account of models as explorations. Theoretical models typically isolate by means of idealization, and they are representatives of some target system, which prompts issues of resemblance between the two to arise. Models as representations are constrained both ontologically (by their targets) and pragmatically (by the purposes and audiences of the modeller), and these relations are coordinated by (...) a model commentary. Surrogate models are often about single mechanisms. They are distinguishable from substitute models, which are examined without any concern about their connections with the target. Models as credible worlds are surrogate models that are believed to provide access to their targets on account of their credibility (of which a few senses are distinguished). (shrink)

The F-twist is giving way to the methodology of scientific research programs. Milton Friedman's “Methodology for Economics” is being supplanted as the orthodox rationale for neoclassical economics by Imre Lakatos' account of scientific respectability. Friedman's instrumentalist thesis that theories are to be judged by the confirmation of their consequences and not the realism of their assumptions has long been widely endorsed by economists, under Paul Samuelson's catchy rubric “the F-twist.” It retains its popularity among economists who want no truck with (...) methodology, but among the increasing number of able economists who are writing on methodology the F-twist has been surrendered, not so much because these writers have decided it is false, as because something better has finally come along. (shrink)

Introduction -- Unintended consequences -- The origin of money -- Segregation -- The invisible hand -- The origin of money reconsidered -- Models and representation -- Game theory and conventions -- Conclusion.

It is argued that one can learn from minimal economic models. Minimal models are models that are not similar to the real world, do not resemble some of its features, and do not adhere to accepted regularities. One learns from a model if constructing and analysing the model affects one’s confidence in hypotheses about the world. Economic models, I argue, are often assessed for their credibility. If a model is judged credible, it is considered to be a relevant possibility. Considering (...) such relevant possibilities may affect one’s confidence in necessity or impossibility hypotheses. Thus, one can learn from minimal economic models. (shrink)