Abstract
This paper conducts a laboratory experiment to examine the effectiveness of majority-vote reward mechanism on cooperation, and to compare its effects with that of peer reward and no reward in the voluntary contribution mechanism. According to the experimental result, it shows that whether individuals have homogeneous or heterogeneous marginal per capita return of the public good, the majority-vote reward mechanism is significantly effective in facilitating cooperation.




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Notes
Since this study focus on how different reward mechanisms affect individual contribution decisions, and most previous studies assume the distribution of MPCRs is common knowledge, this study uses the same experimental setting. How the information related to the distribution of MPCRs affects the contribution may be an interesting future research direction.
Although subjects are likely to interact multiple times, they are not informed the identity of others.
It is equal to USD 18.02.
All non-parametric statistical tests in this study are two-tailed.
I conduct the WSR test. VCM situation: \(Z = 2.52\), \(p = 0.01\) for low-MCPR vs median-MPCR; \(Z = 2.52\), \(p = 0.01\) for low-MCPR vs high-MPCR; \(Z =2.38\), \(p = 0.02\) for median-MCPR vs high-MPCR. Peer situation: \(Z = 2.52\), \(p = 0.01\) for low-MCPR vs median-MPCR; \(Z = 2.52\), \(p = 0.01\) for low-MCPR vs high-MPCR; \(Z = 2.24\), \(p = 0.03\) for median-MCPR vs high-MPCR. Vote situation: \(Z = 2.52\), \(p = 0.01\) for low-MCPR vs median-MPCR; \(Z = 2.52\), \(p = 0.01\) for low-MCPR vs high-MPCR; \(Z = 1.26\), \(p = 0.21\) for median-MCPR vs high-MPCR.
Let \(g_{i}\) represent subject i’s contribution and \({\bar{G}}_{-i}\) be the average contribution of other group members. The positive deviation is defined as \(max\lbrace g_{i} - {\bar{G}}_{-i},0\rbrace\) and the absolute negative deviation is defined as \(max\lbrace {\bar{G}}_{-i} - g_{i},0\rbrace\).
I conduct the WSR test. O-VCM vs. O-Peer: \(Z= -2.28\), \(p = 0.02\); O-VCM vs. O-Vote: \(Z = -2.52\), \(p= 0.01\); O-Peer vs. O-Vote: \(Z = -2.52\), \(p = 0.01\); E-VCM vs. E-Peer: \(Z = -0.14\), \(p = 0.89\); E-VCM vs. E-Vote: \(Z = -1.68\), \(p= 0.09\); E-peer vs. E-Vote: \(Z = -1.54\), \(p = 0.12\).
I conduct the WSR test. O-VCM vs. O-Peer: \(Z= 1.68\), \(p = 0.09\); O-VCM vs. O-Vote: \(Z = -1.54\), \(p= 0.12\); O-Peer vs. O-Vote: \(Z = -2.38\), \(p = 0.02\); E-VCM vs. E-Peer: \(Z = 1.96\), \(p = 0.05\); E-VCM vs. E-Vote: \(Z = 0.84\), \(p= 0.40\); E-peer vs. E-Vote: \(Z = -2.24\), \(p = 0.03\).
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Acknowledgements
The author thanks two anonymous referees for very helpful comments and suggestions. The author also thanks Hsin-Yi Chen and Wen-Jing Liu for testing and running the experiment. Financial Support is provided by the Ministry of Science and Technology (MOST) in Taiwan (MOST 105-2410-H-305-014).
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Peng, HC. Effects of majority-vote reward mechanism on cooperation: a public good experimental study. Soc Choice Welf 59, 989–1008 (2022). https://doi.org/10.1007/s00355-022-01417-3
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DOI: https://doi.org/10.1007/s00355-022-01417-3