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Does increasing inequality threaten social stability? Evidence from the lab

Author

Listed:
  • Abigail Barr

    (University of Nottingham)

  • Anna Hochleitner

    (NHH Bergen)

  • Silvia Sonderegger

    (University of Nottingham)

Abstract
In this paper we study the relationship between inequality and social instability. While the argument that inequality can be damaging for the cohesion of a society is old, the empirical evidence is mixed. We use a novel approach to isolate the causal relationship running from inequality to instability. Specifically, we conduct a laboratory experiment. In the experiment, two groups are interacting with each other repeatedly and have an incentive to cooperate even though cooperation comes at the cost of inter-group inequality. In the second half of the experiment, we vary the extent of the inequality implied by cooperation. Our results show that increasing such inequality has a destabilising effect; the disadvantaged group attacks the status quo. We show that this behaviour is consistent with a simple theoretical framework incorporating disadvantageous inequality aversion and myopic best response. Moreover, we find that a worsening of the absolute situation of the disadvantaged group or a sudden rather than gradual increase in inequality exacerbates the destabilising effect of inequality. Finally, we show that history matters, with people responding differently to the same level of inequality now depending on their past experiences.

Suggested Citation

  • Abigail Barr & Anna Hochleitner & Silvia Sonderegger, 2023. "Does increasing inequality threaten social stability? Evidence from the lab," Discussion Papers 2023-13, The Centre for Decision Research and Experimental Economics, School of Economics, University of Nottingham.
    • Handle: RePEc:not:notcdx:2023-13
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    More about this item

    Keywords

    Collective decision making; Conflict and Revolutions; Inequality;
    All these keywords.

    JEL classification:

    • C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior
    • D01 - Microeconomics - - General - - - Microeconomic Behavior: Underlying Principles
    • D63 - Microeconomics - - Welfare Economics - - - Equity, Justice, Inequality, and Other Normative Criteria and Measurement
    • D74 - Microeconomics - - Analysis of Collective Decision-Making - - - Conflict; Conflict Resolution; Alliances; Revolutions

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