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Genes and Social Mobility: A Case for Progressive Income Tax

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  • Ki Young Park

Abstract

The effect of ability inheritance on income distribution and social mobility is analyzed with an emphsis on the role of progressive income tax. Epstein-Zin style utility function is used to highlight the role of risk aversion. The result shows that higher genetic inheritability leads to lower per capita income, higher income variance and lower aggregate welfare at the steady state. This tendency is intensified when the elasticity of a child's income to parent's educational investment is higher. In this setup, it is shown that progressive income tax can be a welfare-enhancing tool by increasing social mobility. The optimal progressive income tax rate is obtained in the benchmark model and its positive effect is discussed in the context of “Veil of ignorance”, a concept proposed by Rawls (A Theory of Justice (Cambridge, MA: Harvard, University Press), 1971).

Suggested Citation

  • Ki Young Park, 2009. "Genes and Social Mobility: A Case for Progressive Income Tax," Global Economic Review, Taylor & Francis Journals, vol. 38(4), pages 431-459.
    • Handle: RePEc:taf:glecrv:v:38:y:2009:i:4:p:431-459
    DOI: 10.1080/12265080903391842
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    References listed on IDEAS

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