Three Essays on Repeated Games
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- Ian Domowitz & R. Glenn Hubbard & Bruce C. Petersen, 1986. "Business Cycles and the Relationship Between Concentration and Price-Cost Margins," RAND Journal of Economics, The RAND Corporation, vol. 17(1), pages 1-17, Spring.
- Kreps, David M & Wilson, Robert, 1982.
"Sequential Equilibria,"
Econometrica, Econometric Society, vol. 50(4), pages 863-894, July.
- David Kreps & Robert Wilson, 1998. "Sequential Equilibria," Levine's Working Paper Archive 237, David K. Levine.
- David M Kreps & Robert Wilson, 2003. "Sequential Equilibria," Levine's Working Paper Archive 618897000000000813, David K. Levine.
- Kreps, David M. & Milgrom, Paul & Roberts, John & Wilson, Robert, 1982.
"Rational cooperation in the finitely repeated prisoners' dilemma,"
Journal of Economic Theory, Elsevier, vol. 27(2), pages 245-252, August.
- 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.
- James W. Friedman, 1971. "A Non-cooperative Equilibrium for Supergames," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 38(1), pages 1-12.
- Paul Klemperer, 1995. "Competition when Consumers have Switching Costs: An Overview with Applications to Industrial Organization, Macroeconomics, and International Trade," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 62(4), pages 515-539.
- John Haltiwanger & Joseph E. Harrington Jr., 1991. "The Impact of Cyclical Demand Movements on Collusive Behavior," RAND Journal of Economics, The RAND Corporation, vol. 22(1), pages 89-106, Spring.
- Severin Boreinstein & Andrea Shepard, 1996.
"Dynamic Pricing in Retail Gasoline Markets,"
RAND Journal of Economics, The RAND Corporation, vol. 27(3), pages 429-451, Autumn.
- Severin Borenstein & Andrea Shepard, 1993. "Dynamic Pricing in Retail Gasoline Markets," NBER Working Papers 4489, National Bureau of Economic Research, Inc.
- Borenstein, S. & Shepard, A., 1993. "Dynamic Pricing in Retail Gazoline Markets," Papers 93-22, California Davis - Institute of Governmental Affairs.
- Drew Fudenberg & David Levine & Eric Maskin, 2008.
"The Folk Theorem With Imperfect Public Information,"
World Scientific Book Chapters, in: Drew Fudenberg & David K Levine (ed.), A Long-Run Collaboration On Long-Run Games, chapter 12, pages 231-273,
World Scientific Publishing Co. Pte. Ltd..
- Fudenberg, Drew & Levine, David I & Maskin, Eric, 1994. "The Folk Theorem with Imperfect Public Information," Econometrica, Econometric Society, vol. 62(5), pages 997-1039, September.
- Fudenberg, D. & Levine, D.K. & Maskin, E., 1989. "The Folk Theorem With Inperfect Public Information," Working papers 523, Massachusetts Institute of Technology (MIT), Department of Economics.
- Drew Fudenberg & David K. Levine & Eric Maskin, 1994. "The Folk Theorem with Imperfect Public Information," Levine's Working Paper Archive 2058, David K. Levine.
- Drew Fudenberg & David K. Levine & Eric Maskin, 1994. "The Folk Theorem with Imperfect Public Information," Levine's Working Paper Archive 394, David K. Levine.
- Kyle Bagwell & Robert Staiger, 1997.
"Collusion Over the Business Cycle,"
RAND Journal of Economics, The RAND Corporation, vol. 28(1), pages 82-106, Spring.
- Kyle Bagwell & Robert W. Staiger, 1995. "Collusion over the Business Cycle," NBER Working Papers 5056, National Bureau of Economic Research, Inc.
- Bagwell, K. & Staiger, R.W., 1995. "Collusion Over the Business Cycle," Working papers 9504, Wisconsin Madison - Social Systems.
- Kyle Bagwell & Robert W. Staiger, 1995. "Collusion Over the Business Cycle," Discussion Papers 1118, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Drew Fudenberg & Eric Maskin, 2008.
"The Folk Theorem In Repeated Games With Discounting Or With Incomplete Information,"
World Scientific Book Chapters, in: Drew Fudenberg & David K Levine (ed.), A Long-Run Collaboration On Long-Run Games, chapter 11, pages 209-230,
World Scientific Publishing Co. Pte. Ltd..
- Fudenberg, Drew & Maskin, Eric, 1986. "The Folk Theorem in Repeated Games with Discounting or with Incomplete Information," Econometrica, Econometric Society, vol. 54(3), pages 533-554, May.
- Julio J. Rotemberg & Michael Woodford, 1991. "Markups and the Business Cycle," NBER Chapters, in: NBER Macroeconomics Annual 1991, Volume 6, pages 63-140, National Bureau of Economic Research, Inc.
- Brown-Kruse, Jamie, et al, 1994. "Bertrand-Edgeworth Competition in Experimental Markets," Econometrica, Econometric Society, vol. 62(2), pages 343-372, March.
- Chevalier, Judith A & Scharfstein, David S, 1996.
"Capital-Market Imperfections and Countercyclical Markups: Theory and Evidence,"
American Economic Review, American Economic Association, vol. 86(4), pages 703-725, September.
- Judith A. Chevalier & David S. Scharfstein, 1994. "Capital Market Imperfections and Countercyclical Markups: Theory and Evidence," NBER Working Papers 4614, National Bureau of Economic Research, Inc.
- Rotemberg, Julio J & Saloner, Garth, 1986. "A Supergame-Theoretic Model of Price Wars during Booms," American Economic Review, American Economic Association, vol. 76(3), pages 390-407, June.
- Michihiro Kandori, 1991. "Correlated Demand Shocks and Price Wars During Booms," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 58(1), pages 171-180.
- Holt, Charles A, 1985. "An Experimental Test of the Consistent-Conjectures Hypothesis," American Economic Review, American Economic Association, vol. 75(3), pages 314-325, June.
- Abreu, Dilip & Dutta, Prajit K & Smith, Lones, 1994.
"The Folk Theorem for Repeated Games: A NEU Condition,"
Econometrica, Econometric Society, vol. 62(4), pages 939-948, July.
- Abreu, D. & Dutta, P.K. & Smith, L., 1992. "Folk Theorems for Repeated Games: A NEU Condition," Working papers 92-15, Massachusetts Institute of Technology (MIT), Department of Economics.
- Dilip Abreu & Prajit K Dutta & Lones Smith, 1997. "Folk Theorems for Repeated Games: A NEU Condition," Levine's Working Paper Archive 633, David K. Levine.
- Robert H. Porter, 1983. "A Study of Cartel Stability: The Joint Executive Committee, 1880-1886," Bell Journal of Economics, The RAND Corporation, vol. 14(2), pages 301-314, Autumn.
- Slade, Margaret E, 1987. "Interfirm Rivalry in a Repeated Game: An Empirical Test of Tacit Collusion," Journal of Industrial Economics, Wiley Blackwell, vol. 35(4), pages 499-516, June.
- Glenn Ellison, 1994. "Theories of Cartel Stability and the Joint Executive Committee," RAND Journal of Economics, The RAND Corporation, vol. 25(1), pages 37-57, Spring.
- Thomas R. Palfrey & Howard Rosenthal, 1994.
"Repeated Play, Cooperation and Coordination: An Experimental Study,"
The Review of Economic Studies, Review of Economic Studies Ltd, vol. 61(3), pages 545-565.
- Palfrey, Thomas R. & Rosenthal, Howard., "undated". "Repeated Play, Cooperation and Coordination: An Experimental Study," Working Papers 785, California Institute of Technology, Division of the Humanities and Social Sciences.
- Drew Fudenberg & David K. Levine, 1997.
"Measuring Players' Losses in Experimental Games,"
The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 112(2), pages 507-536.
- Levine, David & Fudenberg, Drew, 1997. "Measuring Players' Losses in Experimental Games," Scholarly Articles 3160492, Harvard University Department of Economics.
- Green, Edward J & Porter, Robert H, 1984.
"Noncooperative Collusion under Imperfect Price Information,"
Econometrica, Econometric Society, vol. 52(1), pages 87-100, January.
- Green, Edward J. & Porter, Robert H., 1982. "Noncooperative Collusion Under Imperfect Price Information," Working Papers 367, California Institute of Technology, Division of the Humanities and Social Sciences.
- Edward J Green & Robert H Porter, 1997. "Noncooperative Collusion Under Imperfect Price Information," Levine's Working Paper Archive 1147, David K. Levine.
- William A. Brock & José A. Scheinkman, 1985. "Price Setting Supergames with Capacity Constraints," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 52(3), pages 371-382.
- repec:bla:econom:v:58:y:1991:i:231:p:317-23 is not listed on IDEAS
- Abreu, Dilip, 1986. "Extremal equilibria of oligopolistic supergames," Journal of Economic Theory, Elsevier, vol. 39(1), pages 191-225, June.
- Bresnahan, Timothy F., 1989. "Empirical studies of industries with market power," Handbook of Industrial Organization, in: R. Schmalensee & R. Willig (ed.), Handbook of Industrial Organization, edition 1, volume 2, chapter 17, pages 1011-1057, Elsevier.
- Rotemberg, Julio J & Woodford, Michael, 1992.
"Oligopolistic Pricing and the Effects of Aggregate Demand on Economic Activity,"
Journal of Political Economy, University of Chicago Press, vol. 100(6), pages 1153-1207, December.
- Julio J. Rotemberg & Michael Woodford, 1989. "Oligopolistic Pricing and the Effects of Aggregate Demand on Economic Activity," NBER Working Papers 3206, National Bureau of Economic Research, Inc.
- Okuno-Fujiwara Masahiro & Postlewaite Andrew, 1995. "Social Norms and Random Matching Games," Games and Economic Behavior, Elsevier, vol. 9(1), pages 79-109, April.
- George Akerlof, 1976. "The Economics of Caste and of the Rat Race and Other Woeful Tales," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 90(4), pages 599-617.
- Cooper, Russell & DeJong, Douglas V. & Forsythe, Robert & Ross, Thomas W., 1996.
"Cooperation without Reputation: Experimental Evidence from Prisoner's Dilemma Games,"
Games and Economic Behavior, Elsevier, vol. 12(2), pages 187-218, February.
- Russell Cooper & Douglas V. DeJong & Thomas W. Ross, 1992. "Cooperation without Reputation: Experimental Evidence from Prisoner's Dilemma Games," Papers 0036, Boston University - Industry Studies Programme.
- Cooper, R. & DeJong, D.W. & Ross, T.W., 1992. "Cooperation without Reputation: Experimental Evidence from Prisoner's Dilemma Games," Papers 36, Boston University - Industry Studies Programme.
- Robert J. Aumann & Lloyd S. Shapley, 2013.
"Long Term Competition -- A Game-Theoretic Analysis,"
Annals of Economics and Finance, Society for AEF, vol. 14(2), pages 627-640, November.
- Robert J. Aumann & Lloyd S. Shapley, 1992. "Long Term Competition-A Game Theoretic Analysis," UCLA Economics Working Papers 676, UCLA Department of Economics.
- Andreoni, James A & Miller, John H, 1993.
"Rational Cooperation in the Finitely Repeated Prisoner's Dilemma: Experimental Evidence,"
Economic Journal, Royal Economic Society, vol. 103(418), pages 570-585, May.
- Andreoni, J. & Miller, J.H., 1991. "Rational Cooperative in the Finitely Repeated Prisoner's Dilemma: Experimental Evidence," Working papers 9102, Wisconsin Madison - Social Systems.
- James Andreoni & John H Miller, 1997. "Rational Cooperation in the finitely repeated prisoner's dilemma: experimental evidence," Levine's Working Paper Archive 670, David K. Levine.
- J. Keith Murnighan & Alvin E. Roth, 1983. "Expecting Continued Play in Prisoner's Dilemma Games," Journal of Conflict Resolution, Peace Science Society (International), vol. 27(2), pages 279-300, June.
- Drew Fudenberg & David K. Levine, 1996. "Measuring Subject’s Losses in Experimental Games," Levine's Working Paper Archive 370, David K. Levine.
- Greif, Avner, 1993. "Contract Enforceability and Economic Institutions in Early Trade: the Maghribi Traders' Coalition," American Economic Review, American Economic Association, vol. 83(3), pages 525-548, June.
- Feinberg, Robert M & Husted, Thomas A, 1993. "An Experimental Test of Discount-Rate Effects on Collusive Behaviour in Duopoly Markets," Journal of Industrial Economics, Wiley Blackwell, vol. 41(2), pages 153-160, June.
- Porter, Robert H., 1983. "Optimal cartel trigger price strategies," Journal of Economic Theory, Elsevier, vol. 29(2), pages 313-338, April.
- Greif, Avner & Milgrom, Paul & Weingast, Barry R, 1994. "Coordination, Commitment, and Enforcement: The Case of the Merchant Guild," Journal of Political Economy, University of Chicago Press, vol. 102(4), pages 745-776, August.
- Michihiro Kandori, 1992.
"Social Norms and Community Enforcement,"
The Review of Economic Studies, Review of Economic Studies Ltd, vol. 59(1), pages 63-80.
- Michi Kandori, 2010. "Social Norms and Community Enforcement," Levine's Working Paper Archive 630, David K. Levine.
- repec:bla:econom:v:63:y:1996:i:252:p:531-41 is not listed on IDEAS
- David M. Kreps & Jose A. Scheinkman, 1983. "Quantity Precommitment and Bertrand Competition Yield Cournot Outcomes," Bell Journal of Economics, The RAND Corporation, vol. 14(2), pages 326-337, Autumn.
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