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IQ in the Ramsey Model: A Naive Calibration

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Author Info
Garett Jones () (Economics and Finance Southern Illinois University)

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Abstract

I show that in a conventional Ramsey model, between one-fourth and one-half of the global income distribution can be explained by a single factor: The effect of large, persistent differences in national average IQ on the private marginal product of labor. Thus, differences in national average IQ may be a driving force behind global income inequality. These persistent differences in cognitive ability--which are well-supported in the psychology literature--are likely to be somewhat malleable through better health care, better education, and especially better nutrition in the world’s poorest countries. A simple calibration exercise in the spirit of Bils and Klenow (2000) and Castro (2005) is conducted. I show that an IQ-augmented Ramsey model can explain more than half of the empirical relationship between national average IQ and GDP per worker. I provide evidence that little of the IQ-productivity relationship is likely to be due to reverse causality.

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Paper provided by Society for Economic Dynamics in its series 2006 Meeting Papers with number 213.

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Date of creation: 03 Dec 2006
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Handle: RePEc:red:sed006:213

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Related research
Keywords: Human Capital; Intelligence; IQ; Economic Growth;

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Find related papers by JEL classification:
E13 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Neoclassical
J24 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Human Capital; Skills; Occupational Choice; Labor Productivity
O41 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - One, Two, and Multisector Growth Models

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References listed on IDEAS
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  7. Rui Castro, 2005. "Economic Development and Growth in the World Economy," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 8(1), pages 195-230, January. [Downloadable!] (restricted)
  8. Weede, Erich & Kampf, Sebastian, 2002. "The Impact of Intelligence and Institutional Improvements on Economic Growth," Kyklos, Blackwell Publishing, vol. 55(3), pages 361-80.
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  16. Eric A. Hanushek & Dennis D. Kimko, 2000. "Schooling, Labor-Force Quality, and the Growth of Nations," American Economic Review, American Economic Association, vol. 90(5), pages 1184-1208, December. [Downloadable!] (restricted)
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  20. Mankiw, N Gregory & Romer, David & Weil, David N, 1992. "A Contribution to the Empirics of Economic Growth," The Quarterly Journal of Economics, MIT Press, vol. 107(2), pages 407-37, May. [Downloadable!] (restricted)
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Garett Jones & W. Joel Schneider, 2005. "Intelligence, Human Capital, and Economic Growth: A Bayesian Averaging of Classical Estimates (BACE) Approach," Development and Comp Systems 0507005, EconWPA. [Downloadable!]
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