Daniel Hausman

This book is about preferences, principally as they figure in economics. It also explores their uses in everyday language and action, how they are understood in psychology and how they figure in philosophical reflection on action and morality. The book clarifies and for the most part defends the way in which economists invoke preferences to explain, predict and assess behavior and outcomes. Hausman argues, however, that the predictions and explanations economists offer rely on theories of preference formation that are in need of further development, and he criticizes attempts to define welfare in terms of preferences and to define preferences in terms of choices or self-interest. The analysis clarifies the relations between rational choice theory and philosophical accounts of human action. The book also assembles the materials out of which models of preference formation and modification can be constructed, and it comments on how reason and emotion shape preferences.

People have thought about economics for as long as they have thought about how to manage their households, and indeed Aristotle assimilated the study of the economic affairs of a city to the study of the management of a household. During the two millennia between Aristotle and Adam Smith, one finds reflections concerning economic problems mainly in the context of discussions of moral or policy questions. For example, scholastic philosophers commented on money and interest in inquiries concerning the justice of "usury" (charging interest on money loans), and in the 17th century, there was a great deal of discussion of policy concerning foreign trade. Economics only emerged as a distinct field of study with the bold 18th-century idea that there were "economies"--that is autonomous law-governed systems of human interaction involving production, distribution and exchange. This view is already well developed in Adam Smith's Wealth of Nations, from which much of economics derives.

This paper makes a modest point. Suppose one wants to evaluate alternative policies, institutions or even constitutions on the basis of their consequences. To do so, one needs to evaluate their consequences and one needs to know what their consequences are. Let us suppose that the role of economic theories and game theory in particular is mainly to help us to use information we already possess or that we can acquire at a reasonable cost to judge what the consequences will be. We do not necessarily need true theories or theories that provide perfectly precise predictions. What sort of accuracy and precision we need depends on how the consequences of alternative policies are evaluated. The worth of an economic theory in this context of policy assessment depends on the accuracy of the predictions the theory permits, the costs of gathering the needed information, and the costs of learning and using the theory. My only excuse for uttering these truisms is that well known economists and philosophers have denied them

Many ethical theories, including in particular consequentialist moral the ories, require comparisons of the amount of good possessed or received by different people. In the case of some goods, such as monetary income, wealth, education, or health, such comparisons are relatively unproblematic. Even in the case of such goods there may be serious empirical measurement problems, but there appear to be no difficulties in principle. Thus Cooter and Rappoport maintained that there was no serious difficulty of making interpersonal utility comparisons for an earlier generation of economists who regarded utility as an index of “material welfare.”

This essay develops an account of health, the functional efficiency theory, which derives from Christopher Boorse's biostatistical theory. Like the BST, the functional efficiency theory is a nonevaluative view of health, but unlike the BST, it argues that the fundamental theoretical task is to distinguish levels of efficiency with which the parts and processes within organisms and within systems within organisms function. Which of these to label as healthy or pathological is of secondary importance. Because the statistical distributions that Boorse's account relies on are distributions of functional efficiency, the functional efficiency theory arguably complements rather than challenges the BST.

The health gradient among those who are by historical standards both remarkably healthy and well-off is of considerable moral importance with respect to benevolence, justice and the theory of welfare. Indeed it may help us to realize that for most people the good life lies in close and intricate social ties with others which can flourish only when inequalities are limited. The health gradient suggests that there is a story to be told in which egalitarian justice, solidarity, health and well-being go hand-in-hand

People condemn inequalities for many reasons. For example, many who have no concern with distribution per se criticize inequalities in health care, because these inequalities lessen the benefits provided by the resources that are devoted to health care. Others who place no intrinsic value on distribution believe that a just society must show a special concern for those who are worst off. Some people, on the other hand, do place an intrinsic value on equality of distribution, regardless of its contribution to other goals. Derek Parfit and Larry Temkin call these people "egalitarians." I shall always employ quotation marks when referring to "egalitarians" in this special sense, because, as I shall argue, this terminology is misleading. One of its unhappy implications is that almost all egalitarians are not "egalitarians."

The Inexact and Separate Science of Economics offers an overview of standard microeconomics and general equilibrium theory. These are not the whole of orthodox economics, and orthodox economics is not the whole of economics. But orthodox economics dominates the profession, and the theoretical core of microeconomics and general equilibrium theory – what I called ‘equilibrium theory’ – is central to most orthodox economics. Unlike many methodological works, which focus almost exclusively on the empirical problems of equilibrium theory and its applications, ISSE is also concerned with the structure, strategy and heuristics of equilibrium theorizing, and it attempts to link questions about theory appraisal to questions about structure and strategy. It is addressed both to philosophers interested in epistemological questions posed by the social sciences and to economists interested in reflecting on and improving their discipline. Its inspiration lies in the work of John Stuart Mill.