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Sustainable Heterogeneity: Inequality, Growth, and Social Welfare in a Heterogeneous Population

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  • Harashima, Taiji

Abstract

This paper studies social welfare in a heterogeneous population under the criteria of efficiency and sustainable heterogeneity. As is well known, heterogeneity in time preference results in substantial inequality. This paper shows that, even if households have heterogeneous preferences, there is a balanced growth path on which all the optimality conditions of all heterogeneous households are equally and indefinitely satisfied, and heterogeneity is sustainable on this path. The existence of a unique sustainable path will shed new light on social welfare issues, but this path cannot necessarily be naturally obtained by relying only on markets. Sustainable heterogeneity is politically fragile and requires rational―not unconditional―sacrifice and altruism, and interventions by the authority are justified. Sustainable heterogeneity indicates that globalization should be accompanied by measures that support developing countries and that a GDP modified for measures of sustainable heterogeneity may more correctly measure people’s “happiness.” However, it also indicates that inequality is necessary for sustainability and a unique sustainable level of inequality exists.

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Bibliographic Info

Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 22521.

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Date of creation: 06 May 2010
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Handle: RePEc:pra:mprapa:22521

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Keywords: Sustainability; Heterogeneity; Inequality; Growth; Social welfare; Altruism; Globalization; International trade;

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References

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  23. Harashima, Taiji, 2009. "A Theory of Total Factor Productivity and the Convergence Hypothesis: Workers’ Innovations as an Essential Element," MPRA Paper 15508, University Library of Munich, Germany.
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Cited by:
  1. Harashima, Taiji, 2012. "Sustainable Heterogeneity as the Unique Socially Optimal Allocation for Almost All Social Welfare Functions," MPRA Paper 40938, University Library of Munich, Germany.
  2. Harashima, Taiji, 2011. "A Mechanism of Inflation Differentials and Current Account Imbalances in the Euro Area," MPRA Paper 28121, University Library of Munich, Germany.
  3. Harashima, Taiji, 2013. "Sustainable Heterogeneity in Exogenous Growth Models: The Socially Optimal Distribution by Government’s Intervention," MPRA Paper 51653, University Library of Munich, Germany.

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