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A Bayesian Treatment of Duhem's Thesis: The Case of the ‘Farm Problem’ in Agricultural Economics

Published online by Cambridge University Press:  05 December 2008

David Dearmont
Affiliation:
Nebraska Department of Revenue
David A. Bessler
Affiliation:
Texas A & M University

Extract

In this paper we consider a Bayesian treatment of ‘Duhem's thesis’, the proposition that theories are never refuted on empirical grounds because they cannot be tested in isolation from auxiliary hypotheses about initial conditions or the operation of scientific instruments. Sawyer, Beed, and Sankey (1997) consider Duhem's thesis (and its restatement in stronger and weaker forms as the ‘Duhem-Quine thesis’) and its role in hypothesis testing, using four theories from economics and finance as examples. Here we consider Duhem's thesis in the context of theory choice, econometric results, and the ‘farm problem’ in agricultural economics. This problem is defined as persistently low and highly variable prices, incomes, and returns in the agricultural sector as compared to the nonagricultural sector of the U.S. economy. The existence of the farm problem tends to refute an implication of general equilibrium (GE) theory — that resources flow to equate returns between sectors of the economy. We discuss Duhem's thesis in the context of demonstrating why evidence supporting the farm problem has not diminished the standing of general equilibrium theory among agricultural economists.

Type
Essays
Copyright
Copyright © Cambridge University Press 1997

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References

Bailey, L. H. 1897. ‘Is there a distinct agricultural question?’ Supplement to Economic Studies, 2:5267Google Scholar
Dorling, Jon. 1979. ‘Bayesian personalism, the methodology of scientific research programmes, and Duhem's problem’. Studies in History and Philosophy of Science, 10:177–87CrossRefGoogle Scholar
Gardner, Bruce L. 1992a. ‘Changing economic perspectives on the farm problem’. Journal of Economic Literature, 30:62101Google Scholar
Gardner, Bruce L. 1992b. ‘How the data we make can unmake us: annals of factology’. American Journal of Agricultural Economics, 74:1066–79CrossRefGoogle Scholar
Gardner, Bruce L. 1993. ‘Demythologizing farm income’. Choices, 8:22–3Google Scholar
Hausman, Daniel M. 1984. ‘Are general equilibrium theories explanatory?’ in The Philosophy of Economics, pp. 344–59. Hausman, Daniel M. (ed.). Cambridge University PressGoogle Scholar
Howson, Colin and Urbach, Peter. 1989. Scientific Reasoning: The Bayesian Approach. Open Court Publishing CompanyGoogle Scholar
Koertge, Noretta. 1978. ‘Towards a new theory of scientific inquiry’. In Progress and Rationality in Science, Vol. 58. Radnitzky, G. and Anderson, G. (eds.). Boston Studies in the Philosophy of Science. D. ReidelCrossRefGoogle Scholar
Kyburg, H. E. and Smokler, H. E.. 1964. Studies in Subjective Probability. WileyGoogle Scholar
Leontief, Wassily. 1971. ‘Theoretical assumptions and nonobserved facts’. American Economic Review, 61:17Google Scholar
Reder, Melvin W. 1982. ‘Chicago economics: permanence and chance’. Journal of Economic Literature, 20:138Google Scholar
Sawyer, K. R., Beed, C., and Sankey, H.. 1997. ‘Underdetermination in economics: the Duhem-Quine Thesis’. Economics and Philosophy, 13:123CrossRefGoogle Scholar