Strategy-proofness, requiring that truth-telling is a dominant strategy, is a standard concept used in social choice theory. Saijo et al. (2003) argue that this concept has serious drawbacks. In particular, announcing one's true preference may not be a unique dominant strategy, and almost all strategy-proof mechanisms have a continuum of Nash equilibria. For only a subset of strategy-proof mechanisms do the set of Nash equilibria and the set of dominant strategy equilibria coincide. For example, this double coincidence occurs in the Groves mechanism when preferences are single-peaked. We report experiments using two strategy-proof mechanisms where one of them has a large number of Nash equilibria, but the other has a unique Nash equilibrium. We found clear differences in the rate of dominant strategy play between the two. Journal of Economic Literature Classification Number: C92, D71, D78, and H41.
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Paper provided by Research Institute of Economy, Trade and Industry (RIETI) in its series Discussion papers with number
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Length: 48 pages Date of creation: May 2003 Date of revision: Handle: RePEc:eti:dpaper:03012
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Tatsuyoshi Saijo & Tomas Sjostrom & Takehiko Yamato, 2005.
"Secure Implementation,"
Economics Working Papers
0056, Institute for Advanced Study, School of Social Science.
[Downloadable!]
Other versions:
Tatsuyoshi Saijo & Tomas Sjöström & Takehiko Yamato, 2004.
"Secure Implementation,"
Levine's Bibliography
122247000000000615, UCLA Department of Economics.
[Downloadable!]
Sjostrom, Tomas & Yamato, Takehiko & Saijo, Tatsuyoshi, 2007.
"Secure implementation,"
Theoretical Economics,
Society for Economic Theory, vol. 2(3), pages 203-229, September.
[Downloadable!]
Hideki Mizukami & Tatsuyoshi Saijo & Takuma Wakayama, 2003.
"Strategy-proof Sharing,"
Discussion papers
03017, Research Institute of Economy, Trade and Industry (RIETI).
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Other versions:
Mizukami, Hideki & Saijo, Tatsuyoshi & Wakayama, Takuma, 2003.
"Strategy-Proof Sharing,"
Working Papers
1170, California Institute of Technology, Division of the Humanities and Social Sciences.
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