English, Article, Journal or magazine article edition: Bargaining, coalitions and externalities: A comment on Maskin Geoffroy de Clippel; Roberto Serrano

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Physical Description
  • preprint
Language
  • English

Edition details

Title
  • Bargaining, Coalitions and Externalities: a Comment on Maskin
Author
  • Geoffroy de Clippel
  • Roberto Serrano
Physical Description
  • preprint
Notes
  • We first observe that two of Maskin's results do not extend beyond three players: we construct a four-player partition function with non-positive externalities whose unique solution is inefficient, as well as a four-player characteristic function that has a unique efficient solution for each ordering of the players, but for which the payoff vector obtained by averaging these solutions over the different orderings does not coincide with the Shapley value. On the other hand, we reinforce Maskins insight that externalities may play a crucial role in generating inefficiency. Many existing solutions on how to share profits assume or derive the property of efficiency. Yet we argue that players may have an interest to choose with whom to bargain. We illustrate how this may trigger inefficiency, especially in the presence of externalities, even if bargaining among any group of agents results in an efficient distribution of the surplus they can produce. We also provide some sufficient conditions for efficiency.
  • RePEc:imd:wpaper:wp2008-11
  • We first observe that two of Maskin’s results do not extend beyond three players: we construct a four-player partition function with nonpositive externalities whose unique solution is inefficient, as well as a four-player characteristic function that has a unique efficient solution for each ordering of the players, but for which the payoff vector obtained by averaging these solutions over the different orderings does not coincide with the Shapley value. On the other hand, we reinforce Maskin’s insight that externalities may play a crucial role in generating inefficiency. Many existing solutions on how to share profits assume or derive the property of efficiency. Yet we argue that players may have an interest to choose with whom to bargain. We illustrate how this may trigger inefficiency, especially in the presence of externalities, even if bargaining among any group of agents results in an efficient distribution of the surplus they can produce. We also provide some sufficient conditions for efficiency.
  • externalities; coalition formation; Shapley value
  • RePEc:bro:econwp:2008-16
Language
  • English
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