Positive Interactions Promote Public Cooperation

Author:

Rand David G.12,Dreber Anna13,Ellingsen Tore3,Fudenberg Drew4,Nowak Martin A.156

Affiliation:

1. Program for Evolutionary Dynamics, Harvard University, Cambridge, MA 02138, USA.

2. Berkman Center for Internet and Society, Harvard University, Cambridge, MA 02138, USA.

3. Department of Economics, Stockholm School of Economics, 11358 Stockholm, Sweden.

4. Department of Economics, Harvard University, Cambridge, MA 02138, USA.

5. Department of Mathematics, Harvard University, Cambridge, MA 02138, USA.

6. Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA.

Abstract

Carrots Are Better Than Sticks The challenge of dealing with freeloaders—who benefit from a common good but refuse to pay their “fair share” of the costs—has often been met in theoretical and laboratory studies by sanctioning costly punishment, in which contributors pay a portion of their benefit so that freeloaders lose theirs. Rand et al. (p. 1272 ; see the news story by Pennisi and the cover) added a private interaction session after each round of the public goods game during which participants were allowed to reward or punish other members of their group. The outcome showed that reward was as effective as punishment in maintaining a cooperative mindset, and doing so via rewarding interactions allowed the entire group to prosper because less is lost to the costs of punishing.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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