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Games with espionage

  • Solan, Eilon
  • Yariv, Leeat

"There is no place where espionage is not possible." -Sun Tzu, The Art of War, approximately 500BC We consider extensive form games in which players decide on their strategies before the start of play and can purchase noisy information about their opponents' decisions concerning future response policies (i.e., spy on their opponents' decisions). This addition to the agent's optimization problem naturally changes the set of subgame perfect equilibria (SPE). For example, in the chain-store model, for sufficiently small costs of espionage, the population of Incumbents splits into a positive fraction that accommodates and a positive fraction that fights. For general 2x2 games in extensive form, the existence of equilibria with espionage turns out to depend on the difference between the Stackelberg equilibrium payoffs and the SPE payoffs. We characterize the set of equilibria with espionage as a sunset of the set of correlated equilibria. Welfare and Pareto properties of such equilibria are also explored.

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Article provided by Elsevier in its journal Games and Economic Behavior.

Volume (Year): 47 (2004)
Issue (Month): 1 (April)
Pages: 172-199

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Handle: RePEc:eee:gamebe:v:47:y:2004:i:1:p:172-199
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  1. Hirshleifer, Jack, 1971. "The Private and Social Value of Information and the Reward to Inventive Activity," American Economic Review, American Economic Association, vol. 61(4), pages 561-74, September.
  2. van Damme, E.E.C. & Hurkens, J.P.M., 1997. "Games with imperfectly observable commitment," Other publications TiSEM 98d6e8cb-38a1-4341-b53e-d, Tilburg University, School of Economics and Management.
  3. Drew Fudenberg & David K. Levine, 1995. "Reputation and Equilibrium Selection in Games with a Patient Player," Levine's Working Paper Archive 103, David K. Levine.
  4. Mailath George J., 1993. "Endogenous Sequencing of Firm Decisions," Journal of Economic Theory, Elsevier, vol. 59(1), pages 169-182, February.
  5. Kamien, Morton I. & Tauman, Yair & Zamir, Shmuel, 1990. "On the value of information in a strategic conflict," Games and Economic Behavior, Elsevier, vol. 2(2), pages 129-153, June.
  6. Crawford, Vincent P & Sobel, Joel, 1982. "Strategic Information Transmission," Econometrica, Econometric Society, vol. 50(6), pages 1431-51, November.
  7. Aumann, Robert J., 1974. "Subjectivity and correlation in randomized strategies," Journal of Mathematical Economics, Elsevier, vol. 1(1), pages 67-96, March.
  8. Fudenberg, D., 1991. "Maintaining a Reputation when Strategies are Imperfectly Observed," Working papers 589, Massachusetts Institute of Technology (MIT), Department of Economics.
  9. Forges, Francoise M, 1986. "An Approach to Communication Equilibria," Econometrica, Econometric Society, vol. 54(6), pages 1375-85, November.
  10. Monderer, Dov & Shapley, Lloyd S., 1996. "Potential Games," Games and Economic Behavior, Elsevier, vol. 14(1), pages 124-143, May.
  11. Robert Townsend, 1979. "Optimal contracts and competitive markets with costly state verification," Staff Report 45, Federal Reserve Bank of Minneapolis.
  12. van Damme, E.E.C. & Hurkens, J.P.M., 1996. "Commitment robust equilibria and endogenous timing," Other publications TiSEM ec7a3425-4254-44da-8ef4-e, Tilburg University, School of Economics and Management.
  13. David Kreps & Paul Milgrom & John Roberts & Bob Wilson, 2010. "Rational Cooperation in the Finitely Repeated Prisoners' Dilemma," Levine's Working Paper Archive 239, David K. Levine.
  14. Mookherjee, Dilip & Png, Ivan, 1989. "Optimal Auditing, Insurance, and Redistribution," The Quarterly Journal of Economics, MIT Press, vol. 104(2), pages 399-415, May.
  15. Sadanand, Asha & Sadanand, Venkatraman, 1996. "Firm Scale and the Endogenous Timing of Entry: a Choice between Commitment and Flexibility," Journal of Economic Theory, Elsevier, vol. 70(2), pages 516-530, August.
  16. Akihiko Matsui, 1988. "Information Leakage Forces Cooperation," Discussion Papers 786, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  17. S. Sorin, 1998. "Distribution equilibrium I : Definition and examples," THEMA Working Papers 98-35, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise.
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