CeDEx
Centre for Decision Research and Experimental Economics
   
   
  

CeDEx 2014-10: Growth and Inequality in Public Good Games

Abstract

In a novel experimental design we study public good games with dynamic interdependencies. More precisely, each agent's income at the end of a period serves as her endowment in the following period. In this setting growth and inequality arise endogenously allowing us to address new questions regarding their interplay and effect on cooperation levels. In stark contrast to standard public good experiments, we find that contributions are increasing over time even in the absence of punishment possibilities. In both treatments (with and w/o punishment) inequality and group income are positively correlated for poor groups (below median income), but negatively correlated for rich groups. There is very strong path dependence: inequality in early periods is strongly negatively correlated with group income in later periods. These results give new insights into why people cooperate and should make us rethink previous results from the literature on repeated public good games regarding the decay of cooperation in the absence of punishment.

Download the paper in PDF format

Authors

Simon Gaechter, Friederike Mengel, Elias Tsakas and Alexander Vostroknutov

 

View all CeDEx discussion papers | View all School of Economics featured discussion papers

 

Posted on Wednesday 1st October 2014

Centre for Decision Research and Experimental Economics

Sir Clive Granger Building
University of Nottingham
University Park
Nottingham, NG7 2RD

telephone: +44 (0)115 951 4763
Enquiries: suzanne.robey@nottingham.ac.uk
Experiments: cedex@nottingham.ac.uk