Logistics
We (provisionally) meet on Tuesdays and Thursdays, 10:40a-12:10p, in Bendheim 317.
I will create a mailing list for the course. Therefore, please send me email at your earliest convenience so I can add you to the list. You do not want to miss important announcements, do you?
The course has a Web page at http://www.princeton.edu/~marciano/eco514.html. You should bookmark it and check it every once in a while, as I will be adding material related to the course (including solutions to problems, papers, relevant links, etc.)
If you need to talk to me, you can email me at marciano@princeton.edu for an appointment, or just drop by during my regular OH (Wed 1:00-2:30). My office is 309 Fisher.
Textbook
The main reference for this course is:
OSBORNE, M. and RUBINSTEIN, A. (1994): A Course in Game Theory, Cambridge, MA: MIT Press (denoted “OR” henceforth)
If you are planning to buy a single book for this course, get this one. However, I will sometimes refer to the following texts (which, incidentally, should be on every serious micro theorist’s bookshelf):
MYERSON, R. (1991): Game Theory. Analysis of Conflict, Cambridge, MA: Harvard University Press (denoted “MY” henceforth)
FUDENBERG, D. and TIROLE, J. (1991): Game Theory, Cambridge, MA: MIT Press (denoted “FT” henceforth)
Plan of the Course
Please note: R indicates required readings; O indicates optional readings; and L means that relevant lecture notes will be distributed in class. Lecture notes shall be considered required readings.
1. Introduction
1.1 The main issues
Structure of the Course
Games as Multiperson Decision Problems
R OR Chapter 1
O MY Sections 1.1-1.5
1.2 Zerosum games
Minmax theory
The Minmax theorem and LP
R OR Section 2.5
L
2. Normal—Form Analysis
2.1 Beliefs and Best Responses
Dual characterizations of Best Responses
Iterating the “best response operator:” rationalizability, iterated weak dominance.
R OR Section 2.1 and Chapter 4
O MY Sections 1.8 and 3.1;
BERNHEIM, D. (1984): “Rationalizable Strategic Behavior,” Econometrica,
52, 1007-1028.
2.2 Fixed points of the best response operator: Nash equilibrium.
Existence and mixed strategies. Interpretation.
R OR Sections 2.2-2.4 and 3.1-3.2
3. Games with Incomplete Information
3.1 The basic model
The Harsanyi approach
Bayesian Nash Equilibrium. Interpretation.
R OR Section 2.6
3.2 A closer look: higher-order beliefs
Common Priors
L
4. Interactive Beliefs and the Foundations of Solution Concepts
4.1 The basic idea: Harsanyi’s model revisited
Correlated Equilibrium
R OR Section 3.3
L
4.2 Rationality and the Belief operator
Common Certainty of Rationality.
Equilibrium in Beliefs.
L
O DEKEL, E. and GUL, F. (1990): “Rationality and Knowledge in Game Theory,”
in Advances in Economics and Econometrics, D. Kreps and K. Wallis, eds.,
Cambridge University Press, Cambridge, UK;
TAN, T.C.C. and WERLANG, S.R.C. (1988): “The Bayesian Foundations of Solution Concepts of Games,” Journal of Economic Theory, 45, 370-391.
AUMANN, R. and BRANDENBURGER, A. (1995): “Epistemic Conditions for Nash Equilibrium,” Econometrica, 63, 1161-1180.
5. Putting it All Together: Some Auction Theory
5.1 First- and Second-price auctions
Dominance and Equilibrium analysis with private values
The Revenue Equivalence Theorem
L
O MY Section 3.11
5.2 Rationalizability with Incomplete Information
Non-equilibrium analysis of auctions
Computation!
L
6. Extensive Games: Basics
6.1 Extensive games with perfect information
Notation(s) and terminology
Nash equilibrium
R OR Sections 6.1, 6.3, 6.4
6.2 Backward Induction and Subgame-Perfect equilibrium
The One-Deviation Property
Extensive games with perfect but incomplete information
Perfect Bayesian equilibrium
R OR Section 6.2, 12.3 up to p. 233
7.1 Repeated Games: basics
7.2 General setup and payoff aggregation criteria
Automata
Nash Folk theorems for infinitely repeated games.
R OR Sections 8.1-8.5
7.2 Perfect folk theorems for infinitely repeated games
Perfect folk theorems for finitely repeated games
R OR Sections 8.8-8.10
8. Extensive Games: details
8.1 General Extensive games: imperfect information.
Relationship between normal and extensive form.
Mixed and Behavioral strategies. Kuhn’s Theorem.
Perfect and Imperfect Recall
R OR Chapter 11
8.2 Sequential rationality and off-equilibrium beliefs
Trembling-Hand Perfect equilibrium
Consistent Assessments and Sequential Equilibrium
R OR Sections 12.1-12.2, 12.5
O KREPS, D. and WILSON, R. (1982): “Sequential equilibria,” Econometrica, 50, 863-894;
SELTEN, R. (1975): “A Reexamination of the Perfectness Concept for Equilibrium
Points in Extensive Games,” International Journal of Game Theory, 4:25-55.
9. Applications of Sequential Equilibrium
9.1 The Chain Store Paradox
Modelling Reputation
Comments: (1) Backward Induction; (2) Plausible beliefs
R KREPS, D. and WILSON, R. (1982): “ Reputation and Imperfect Information,” Journal
of Economic Theory 27, 253-279
O ROSENTHAL, R. (1981): “Games of Perfect Information, Predatory Pricing and the Chain-Store Paradox,” Journal of Economic Theory 25:92-100.
9.2 Sequential and Perfect Bayesian Equilibrium
S.E. and P.B.E. in applications
An Example: Insider Trading
R OR, Section 12.3
KYLE, A. (1985) : “Continuous Auctions and Insider Trading,” Econometrica 53, 1315-1334.
10. Sequential Equilibrium: A Critical Look
10.1 Consistency
The Centipede Game and Backward Induction
Strategy and Plans of Action. Variants of sequential rationality.
Weak Sequential Equilibrium
R RENY, P. (1992): “Backward Induction, Normal Form Perfection, and Explicable Equilibria,” Econometrica 60:627-649.
10.2 Interactive Beliefs Models for Dynamic Games
Backward Induction and Common Certainty of Rationality
Weak Rationalizability
L
O BEN-PORATH, E. (1997): “Rationality, Nash Equilibrium, and Backwards Induction
In Perfect-Information Games,” Review of Economic Studies 64, 23-46
11. Extensive Games: Refinements
11.1 Forward induction: outside options, burning money.
Forward and Backward induction.
Iterated weak/conditional dominance and Extensive-Form rationalizability.
R BEN-PORATH, E. and DEKEL, E. (1992): “Signalling Future Actions and the Potential for Sacrifice,” Journal of Economic Theory 57:36-51.
L
O PEARCE, D. (1984): “Rationalizable Strategic Behavior and the Problem of Perfection,” Econometrica 52:1029-1050.
BATTIGALLI, P. (1997): “On Rationalizability in Extensive Games,” Journal of Economic Theory 74:40-61.
11.2 Signalling Games and specialized versions of Forward Induction
The Intuitive Criterion: a simple test of “reasonableness.”
“Monotonicity” of signals: Dn, divinity and friends.
R CHO, I. and KREPS, D. (1987): “Signalling Games and Stable Equilibria,” Quarterly Journal of Economics 102: 179-221.
12. Invariance and Normal-Form refinements
12.1 The Interplay between Normal and Extensive-form analysis
Invariance
Perfect and Proper Equilibria.
Proper and Sequential equilibria.
L
12.2 Strategic Stability and the “axiomatic approach”
A list of desiderata, and the need for set-valued solutions.
“True perfection” and the “Nearby games, Nearby equilibria Principle.”
R KOHLBERG, E. and MERTENS, J-F., (1986): “On the Strategic Stability of Equilibria,” Econometrica 54, 1003-1037.
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