Social Indicators Research

, Volume 142, Issue 2, pp 827–843 | Cite as

Kuznets Curve for the US: A Reconsideration Using Cosummability

  • Adnen Ben Nasr
  • Mehmet Balcilar
  • Seyi Saint AkadiriEmail author
  • Rangan Gupta


The relationship between income inequality and long-run economic growth has gained a growing attention in economic research for over decades. This study employed advanced time series techniques to examine the existence of an inverted U-shaped long-run relationship between income inequality and economic growth, using long-span time series data for the United States between the periods 1917–2012. The concepts of summability, balancedness and co-summability was advanced to analyze nonlinear long-run relations among stochastic processes. The empirical results find no evidence in support of nonlinear long-run (inverted U-shaped) relationship for the US, but findings from a vocal set of economists lends strong support and is the basis for the conclusions drawn by this study.


Income inequality Economic growth Summability Balancedness Co-summability 

JEL Classification

C22 E62 F34 



We would like to thank two anonymous referees for many helpful comments. However, any remaining errors are solely ours.


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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  • Adnen Ben Nasr
    • 1
  • Mehmet Balcilar
    • 2
    • 3
    • 4
  • Seyi Saint Akadiri
    • 2
    Email author
  • Rangan Gupta
    • 4
  1. 1.BESTMODInstitut Supérieur de Gestion de TunisTunisTunisia
  2. 2.Eastern Mediterranean UniversityVia Mersin 10Turkey
  3. 3.Montpellier Business SchoolMontpellierFrance
  4. 4.University of PretoriaPretoriaSouth Africa

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