Part I. Economics of incentives: 1. On theories of incentive compatible choice with compensation Theodore Groves; 2. The theory of incentives: an overview Jean-Jacques Laffont and Eric Maskin; 3. The role of private information in markets and other organizations Roy Radner; Part III. Non-Walrasian economics: 4. Developments in non-Walrasian economics and the microeconomic foundations of macroeconomics Jean-Pascal Benassy; 5. On equilibria with rationing Yves Younes; Part IV. Repeated games: 6. Repeated games: An overview of the zero-sum case Jean-Francois Mertens: Part V. Topics in competitive analysis: 7. The Cournotian foundations of Walrasian equilibrium theory: an exposition of recent theory Andrew Mas-Colell; 8. Recent results on the existence of Cournot equilibrium when efficient scale is small relative to demand Hugo Sonnenschein; Part VI. Applied macroeconomics: 9. Macroeconomic tradeoffs in an international economy with rational expectations John B. Taylor; Part VII. Industrial organization: 10. The new industrial organization and the economic analysis of modern markets Richard Schmalensee.