The conditional contribution mechanism for repeated public goods: the general case
We present a new and simple mechanism for repeated public good environments. In the Conditional Contribution Mechanism (CCM), agents send two messages of the form, “I am willing to contribute x units to the public good if in total y units are contributed.” This mechanism offers agents risk-free stra...
Gespeichert in:
| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
July 2022
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| In: |
Journal of economic theory
Year: 2022, Jahrgang: 203, Pages: 1-28 |
| DOI: | 10.1016/j.jet.2022.105488 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jet.2022.105488 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0022053122000783 
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| Verfasserangaben: | Joerg Oechssler, Andreas Reischmann, Andis Sofianos |
MARC
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| 520 | |a We present a new and simple mechanism for repeated public good environments. In the Conditional Contribution Mechanism (CCM), agents send two messages of the form, “I am willing to contribute x units to the public good if in total y units are contributed.” This mechanism offers agents risk-free strategies, which we call unexploitable. Our main theorem states that all outcomes of the CCM will eventually be Pareto efficient if agents choose unexploitable better responses. We conduct a laboratory experiment to investigate whether observed behavior is consistent with this prediction. In the complete information case we find that indeed almost 80% of outcomes are Pareto optimal. Furthermore, in comparison to the Voluntary Contribution Mechanism, the CCM leads to significantly higher contribution rates. Even under incomplete information, contributions are fairly high and do not deteriorate over time, although surprisingly the VCM does equally well in this case. Theoretically, allowing agents to send two messages helps them ensure the status-quo and at the same time offer higher contribution levels. In a further treatment, where we allow agents to send only one message, we find that total contributions are consistently lower than the CCM in early periods but are similar in later periods. | ||
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| 650 | 4 | |a Experiment | |
| 650 | 4 | |a Mechanism design | |
| 650 | 4 | |a Public goods | |
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