∂ ECONOMICS FOURTH EDITION Joseph E. Stiglitz COLUMBIA UNIVERSITY Carl E.Walsh UNIVERSITY OF CALIFORNIA, SANTA CRUZ ∂ ECONOMICS FOU RT H E D I T ION B W.W. NORTON & COMPANY NEW YORK • LONDON Copyright © 2006, 2002, 1997, 1993 by W. W. Norton & Company, Inc. W. W. Norton & Company has been independent since its founding in 1923, when William Warder Norton and All rights reserved Mary D. Herter Norton first published lectures Printed in the United States of America delivered at the People’s Institute, the adult education division of New York City’s Cooper Union. The Nortons Manufacturing by RR Donnelley Bsoon expanded their program beyond the Institute, Book design by Rubina Yeh publishing books by celebrated academics from Editor: Jack Repcheck America and abroad. By mid-century, the two major Director of Manufacturing—College: Roy Tedoff pillars of Norton’s publishing program—trade books Project Editor: Lory A. Frenkel and college texts—were firmly established. In the Manuscript Editor: Alice Falk 1950s, the Norton family transferred control of the Editorial Assistants: Sarah Solomon, Mik Awake company to its employees, and today—with a staff of Photo Researcher: Kelly Mitchell four hundred and a comparable number of trade, college, and professional titles published each year— W. W. Norton & Company stands as the largest and Library of Congress Cataloging-in Publication Data oldest publishing house owned wholly by its Stiglitz, Joseph E. employees. Economics / Joseph E. Stiglitz, Carl E. Walsh.—4th ed. p. cm. Includes index. ISBN 0-393-92622-2 1. Economics. I. Walsh, Carl E. II. Title HB171.5.S884 2005 330—dc22 2005055518 ISBN 0-393-11644-1 (ebook) W. W. Norton & Company, Inc., 500 Fifth Avenue, New York, N. Y. 10110 www.wwnorton.com W. W. Norton & Company Ltd., Castle House, 75/76 Wells Street, London W1T 3QT 1 2 3 4 5 6 7 8 9 0 ABOUT THE AUTHORS Joseph E.Stiglitz is professor of economics, business, and international and public affairs at Columbia University. Before joining the Columbia faculty, he held appointments at Yale, Oxford, Princeton, and Stanford. Internationally recognized as one of the leading economists of his generation, Professor Stiglitz has made impor- tant contributions to virtually all of the major subfields of economics, in particular the economics of information, one of the key topics highlighted in this text. He was a co-recipient of the Nobel Prize in Economic Science in 2001, and earlier in his career received the American Economic Association’s John Bates Clark Medal, which is given every two years to the most outstanding economist under the age of forty. Professor Stiglitz is the author and editor of hundreds of scholarly articles and books, including the best-selling undergraduate textbook Economics of the Public Sector(Norton) and, with Anthony Atkinson, the classic graduate textbook Lectures in Public Economics.He is the author of two influential popular books as well: Globalization and Its Discontentsand The Roaring Nineties.In addition, he was the founding editor of the Journal of Economic Perspectives.Professor Stiglitz has also played a prominent role at the highest levels of economic policy making. He was a member and chairman of President Clinton’s Council of Economic Advisers and later served as Senior Vice President and Chief Economist of the World Bank. Carl E.Walshis professor of economics at the University of California, Santa Cruz, where he teaches principles of economics. He previously held faculty appoint- ments at Princeton and the University of Auckland, New Zealand, and has been a vis- iting professor at Stanford. He is widely known for his research in monetary economics and is the author of a leading graduate text, Monetary Theory and Policy(MIT Press). Before joining the Santa Cruz faculty, Professor Walsh was senior economist at the Federal Reserve Bank of San Francisco, where he continues to serve as a visiting scholar. He has also been a visiting scholar at the Federal Reserve Banks of Kansas City, Philadelphia, and at the Board of Governors. He has taught courses in mone- tary economics to the research department and staff economists at the central banks of Hong Kong, Norway, Portugal, Spain, and the United Kingdom, and at the International Monetary Fund. He is a past member of the board of editors of the American Economic Reviewand is currently an associate editor of the Journal of Money, Credit, and Bankingand the Journal of Economics and Business.He is also on the editorial board of the Journal of Macroeconomics. ∂v This page intentionally left blank CONTENTS IN BRIEF PART 1 INTRODUCTION 1 Chapter 1 Modern Economics • 3 Chapter 2 Thinking Like an Economist • 25 PART 2 PERFECT MARKETS 51 Chapter 3 Demand,Supply,and Price • 53 Chapter 4 Using Demand and Supply • 77 Chapter 5 The Consumption Decision • 101 Chapter 6 The Firm’s Costs • 131 Chapter 7 The Competitive Firm • 155 Chapter 8 Labor Markets • 175 Chapter 9 Capital Markets • 191 Chapter 10 The Efficiency of Competitive Markets • 215 PART 3 IMPERFECT MARKETS 237 Chapter 11 Introduction to Imperfect Markets • 239 Chapter 12 Monopoly,Monopolistic Competition,and Oligopoly • 261 Chapter 13 Government Policies Toward Competition • 289 Chapter 14 Strategic Behavior • 311 Chapter 15 Imperfect Information in the Product Market • 333 Chapter 16 Imperfections in the Labor Market • 355 PART 4 ISSUES IN PUBLIC POLICY 373 Chapter 17 The Public Sector • 375 Chapter 18 Environmental Economics • 405 Chapter 19 International Trade and Trade Policy • 423 Chapter 20 Technological Change • 453 PART 5 INTRODUCTION TO MACROECONOMICS 471 Chapter 21 Macroeconomics and the Economic Perspective • 473 Chapter 22 Measuring Output and Unemployment • 485 Chapter 23 The Cost of Living and Inflation • 509 ∂vii PART 6 FULL-EMPLOYMENT MACROECONOMICS 523 Chapter 24 The Full-Employment Model • 525 Chapter 25 Government Finance at Full Employment • 547 Chapter 26 The Open Economy at Full Employment • 567 Chapter 27 Growth and Productivity • 585 Chapter 28 Money,the Price Level,and the Federal Reserve • 605 PART 7 MACROECONOMIC FLUCTUATIONS 635 Chapter 29 Introduction to Macroeconomic Fluctuations • 637 Chapter 30 Aggregate Expenditures and Income • 661 Chapter 31 Aggregate Demand and Inflation • 689 Chapter 32 The Federal Reserve and Interest Rates • 715 Chapter 33 The Role of Macroeconomic Policy • 727 PART 8 THE GLOBAL ECONOMY 755 Chapter 34 The International Financial System • 757 Chapter 35 Policy in the Open Economy • 779 Chapter 36 Development and Transition • 793 PART 9 FURTHER TOPICS IN MACROECONOMICS 817 Chapter 37 Inflation and Unemployment • 819 Chapter 38 Controversies in Macroeconomic Policy • 837 Chapter 39 A Student’s Guide to Investing • 865 viii∂
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