Eco514 Game Theory Signaling Games Marciano Siniscalchi January 10, 2000 Introduction Signaling games are used to model the following situation: Player 1, the Sender, receives some private information and sends a message m E M to Player 2, the Receiver. The latter, in turn, observes m but not 0, and

Eco514 Game Theory Forward Induction Marciano Siniscalchi January 10, 2000 Introduction One of the merits of the notion of sequential equilibrium is the emphasis on out-of- equilibrium beliefs-that is, on beliefs (about past and future play)at information sets that should not be reached if given equilibrium is played. The key insight of extensive-form analysis is that out-of-equilibrium beliefs deter

Eco514 Game Theory Lecture 8.5: More on Auctions; PS#1 Marciano Siniscalchi October 14, 1999 Introduction These notes essentially tie up a few loose ends in Lecture 8; in particular, I exhibit examples of inefficiencies in first-and second-price auctions I would also like to briefly comment on Questions 1 and 2 in Problem Set 2

Eco514 Game Theory Lecture8: Applications(1)Simultaneous Auctions Marciano Siniscalchi October 12, 1999 Introduction This lecture, as well as the next, exemplify applications of the framework and techniques developed so far to problems of economic interest. Neither lecture attempts to cover the example applications in any generality, of course; you may however find these topics of sufficient interest to warrant further study

Eco514 Game Theory Lecture 7: Interactive Epistemology(2) Marciano Siniscalchi October 7, 1999 Introduction This lecture presents the two main contributions of \interactive epistemology\ to the the- ory of normal-form games: a characterization of Nash equilibrium beliefs, and a full (i.e. behavioral)characterization of rationalizability

Eco514 Game Theory Lecture 6: Interactive Epistemology(1) Marciano Siniscalchi October 5, 1999 Introduction This lecture focuses on the interpretation of solution concepts for normal-form games. You will recall that, when we introduced Nash equilibrium and Rationalizability, we mentioned numerous reasons why these solution concepts could be regarded as yielding plausible restric- tions on rational play, or perhaps providing a consistency check for our predictions about

Eco514 Game Theory Lecture 5: Games with Payoff Uncertainty(2) Marciano Siniscalchi September 30, 1999 Introduction This lecture continues our analysis of games with payoff uncertainty. The three main objec- tives are: (1) to illustrate the flexibility of the Harsanyi framework (or our version thereof);

Eco514 Game Theory Lecture 4: Games with Payoff Uncertainty(1) Marciano Siniscalchi September 28, 1999 Introduction The vast majority of games of interest in economics, finance, political economy etc. involve some form of payoff uncertainty. A simple but interesting example is provided by auctions: an object is offered for sale, and individuals are required to submit their bids in sealed

Eco514Game Theory Lecture 3: Nash Equilibrium Marciano Siniscalchi September 23, 1999 Introduction Nash equilibrium has undoubtedly proved to be the most influential idea in game theory. enabled fundamental breakthroughs in economics and the social sciences. Its development was a major intellectual achievement; what is perhaps more important, it Recent foundational research has emphasized the subtleties in the interpretation of Nash

Eco514 Game Theory Lecture 2: (Iterated)Best Response Operators Marciano Siniscalchi September 21, 1999 Introduction This lecture continues the analysis of normal-form games. We analyze general, non-zerosum games, emphasizing the informal\equation\: Rational Behavior+ Assumptions about Beliefs=Solution Concepts