Inequality, communication, and the avoidance of disastrous climate change in a public goods game

Alessandro Tavoni, Astrid Dannenberg, Giorgos Kallis, Andreas Löschel

Research output: Contribution to journalArticleResearchpeer-review

209 Citations (Scopus)


International efforts to provide global public goods often face the challenges of coordinating national contributions and distributing costs equitably in the face of uncertainty, inequality, and free-riding incentives. In an experimental setting, we distribute endowments unequally among a group of people who can reach a fixed target sum through successive money contributions, knowing that if they fail, they will lose all their remaining money with 50% probability. In some treatments, we give players the option to communicate intended contributions. We find that inequality reduces the prospects of reaching the target but that communication increases success dramatically. Successful groups tend to eliminate inequality over the course of the game, with rich players signaling willingness to redistribute early on. Our results suggest that coordination-promoting institutions and early redistribution from richer to poorer nations are both decisive for the avoidance of global calamities, such as disruptive climate change.
Original languageEnglish
Pages (from-to)11825-11829
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number29
Publication statusPublished - 19 Jul 2011


  • Climate burden
  • Cooperation
  • Experimental economics
  • Self-serving bias
  • Threshold public good


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