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Principles of Microeconomics 3e

Preface

Principles of Microeconomics 3ePreface
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Table of contents
  1. Preface
  2. 1 Welcome to Economics!
    1. Introduction
    2. 1.1 What Is Economics, and Why Is It Important?
    3. 1.2 Microeconomics and Macroeconomics
    4. 1.3 How Economists Use Theories and Models to Understand Economic Issues
    5. 1.4 How To Organize Economies: An Overview of Economic Systems
    6. Key Terms
    7. Key Concepts and Summary
    8. Self-Check Questions
    9. Review Questions
    10. Critical Thinking Questions
  3. 2 Choice in a World of Scarcity
    1. Introduction to Choice in a World of Scarcity
    2. 2.1 How Individuals Make Choices Based on Their Budget Constraint
    3. 2.2 The Production Possibilities Frontier and Social Choices
    4. 2.3 Confronting Objections to the Economic Approach
    5. Key Terms
    6. Key Concepts and Summary
    7. Self-Check Questions
    8. Review Questions
    9. Critical Thinking Questions
    10. Problems
  4. 3 Demand and Supply
    1. Introduction to Demand and Supply
    2. 3.1 Demand, Supply, and Equilibrium in Markets for Goods and Services
    3. 3.2 Shifts in Demand and Supply for Goods and Services
    4. 3.3 Changes in Equilibrium Price and Quantity: The Four-Step Process
    5. 3.4 Price Ceilings and Price Floors
    6. 3.5 Demand, Supply, and Efficiency
    7. Key Terms
    8. Key Concepts and Summary
    9. Self-Check Questions
    10. Review Questions
    11. Critical Thinking Questions
    12. Problems
  5. 4 Labor and Financial Markets
    1. Introduction to Labor and Financial Markets
    2. 4.1 Demand and Supply at Work in Labor Markets
    3. 4.2 Demand and Supply in Financial Markets
    4. 4.3 The Market System as an Efficient Mechanism for Information
    5. Key Terms
    6. Key Concepts and Summary
    7. Self-Check Questions
    8. Review Questions
    9. Critical Thinking Questions
    10. Problems
  6. 5 Elasticity
    1. Introduction to Elasticity
    2. 5.1 Price Elasticity of Demand and Price Elasticity of Supply
    3. 5.2 Polar Cases of Elasticity and Constant Elasticity
    4. 5.3 Elasticity and Pricing
    5. 5.4 Elasticity in Areas Other Than Price
    6. Key Terms
    7. Key Concepts and Summary
    8. Self-Check Questions
    9. Review Questions
    10. Critical Thinking Questions
    11. Problems
  7. 6 Consumer Choices
    1. Introduction to Consumer Choices
    2. 6.1 Consumption Choices
    3. 6.2 How Changes in Income and Prices Affect Consumption Choices
    4. 6.3 Behavioral Economics: An Alternative Framework for Consumer Choice
    5. Key Terms
    6. Key Concepts and Summary
    7. Self-Check Questions
    8. Review Questions
    9. Critical Thinking Questions
    10. Problems
  8. 7 Production, Costs, and Industry Structure
    1. Introduction to Production, Costs, and Industry Structure
    2. 7.1 Explicit and Implicit Costs, and Accounting and Economic Profit
    3. 7.2 Production in the Short Run
    4. 7.3 Costs in the Short Run
    5. 7.4 Production in the Long Run
    6. 7.5 Costs in the Long Run
    7. Key Terms
    8. Key Concepts and Summary
    9. Self-Check Questions
    10. Review Questions
    11. Critical Thinking Questions
    12. Problems
  9. 8 Perfect Competition
    1. Introduction to Perfect Competition
    2. 8.1 Perfect Competition and Why It Matters
    3. 8.2 How Perfectly Competitive Firms Make Output Decisions
    4. 8.3 Entry and Exit Decisions in the Long Run
    5. 8.4 Efficiency in Perfectly Competitive Markets
    6. Key Terms
    7. Key Concepts and Summary
    8. Self-Check Questions
    9. Review Questions
    10. Critical Thinking Questions
    11. Problems
  10. 9 Monopoly
    1. Introduction to a Monopoly
    2. 9.1 How Monopolies Form: Barriers to Entry
    3. 9.2 How a Profit-Maximizing Monopoly Chooses Output and Price
    4. Key Terms
    5. Key Concepts and Summary
    6. Self-Check Questions
    7. Review Questions
    8. Critical Thinking Questions
    9. Problems
  11. 10 Monopolistic Competition and Oligopoly
    1. Introduction to Monopolistic Competition and Oligopoly
    2. 10.1 Monopolistic Competition
    3. 10.2 Oligopoly
    4. Key Terms
    5. Key Concepts and Summary
    6. Self-Check Questions
    7. Review Questions
    8. Critical Thinking Questions
    9. Problems
  12. 11 Monopoly and Antitrust Policy
    1. Introduction to Monopoly and Antitrust Policy
    2. 11.1 Corporate Mergers
    3. 11.2 Regulating Anticompetitive Behavior
    4. 11.3 Regulating Natural Monopolies
    5. 11.4 The Great Deregulation Experiment
    6. Key Terms
    7. Key Concepts and Summary
    8. Self-Check Questions
    9. Review Questions
    10. Critical Thinking Questions
    11. Problems
  13. 12 Environmental Protection and Negative Externalities
    1. Introduction to Environmental Protection and Negative Externalities
    2. 12.1 The Economics of Pollution
    3. 12.2 Command-and-Control Regulation
    4. 12.3 Market-Oriented Environmental Tools
    5. 12.4 The Benefits and Costs of U.S. Environmental Laws
    6. 12.5 International Environmental Issues
    7. 12.6 The Tradeoff between Economic Output and Environmental Protection
    8. Key Terms
    9. Key Concepts and Summary
    10. Self-Check Questions
    11. Review Questions
    12. Critical Thinking Questions
    13. Problems
  14. 13 Positive Externalities and Public Goods
    1. Introduction to Positive Externalities and Public Goods
    2. 13.1 Investments in Innovation
    3. 13.2 How Governments Can Encourage Innovation
    4. 13.3 Public Goods
    5. Key Terms
    6. Key Concepts and Summary
    7. Self-Check Questions
    8. Review Questions
    9. Critical Thinking Questions
    10. Problems
  15. 14 Labor Markets and Income
    1. Introduction to Labor Markets and Income
    2. 14.1 The Theory of Labor Markets
    3. 14.2 Wages and Employment in an Imperfectly Competitive Labor Market
    4. 14.3 Market Power on the Supply Side of Labor Markets: Unions
    5. 14.4 Bilateral Monopoly
    6. 14.5 Employment Discrimination
    7. 14.6 Immigration
    8. Key Terms
    9. Key Concepts and Summary
    10. Self-Check Questions
    11. Review Questions
    12. Critical Thinking Questions
  16. 15 Poverty and Economic Inequality
    1. Introduction to Poverty and Economic Inequality
    2. 15.1 Drawing the Poverty Line
    3. 15.2 The Poverty Trap
    4. 15.3 The Safety Net
    5. 15.4 Income Inequality: Measurement and Causes
    6. 15.5 Government Policies to Reduce Income Inequality
    7. Key Terms
    8. Key Concepts and Summary
    9. Self-Check Questions
    10. Review Questions
    11. Critical Thinking Questions
    12. Problems
  17. 16 Information, Risk, and Insurance
    1. Introduction to Information, Risk, and Insurance
    2. 16.1 The Problem of Imperfect Information and Asymmetric Information
    3. 16.2 Insurance and Imperfect Information
    4. Key Terms
    5. Key Concepts and Summary
    6. Self-Check Questions
    7. Review Questions
    8. Critical Thinking Questions
    9. Problems
  18. 17 Financial Markets
    1. Introduction to Financial Markets
    2. 17.1 How Businesses Raise Financial Capital
    3. 17.2 How Households Supply Financial Capital
    4. 17.3 How to Accumulate Personal Wealth
    5. Key Terms
    6. Key Concepts and Summary
    7. Self-Check Questions
    8. Review Questions
    9. Critical Thinking Questions
    10. Problems
  19. 18 Public Economy
    1. Introduction to Public Economy
    2. 18.1 Voter Participation and Costs of Elections
    3. 18.2 Special Interest Politics
    4. 18.3 Flaws in the Democratic System of Government
    5. Key Terms
    6. Key Concepts and Summary
    7. Self-Check Questions
    8. Review Questions
    9. Critical Thinking Questions
    10. Problems
  20. 19 International Trade
    1. Introduction to International Trade
    2. 19.1 Absolute and Comparative Advantage
    3. 19.2 What Happens When a Country Has an Absolute Advantage in All Goods
    4. 19.3 Intra-industry Trade between Similar Economies
    5. 19.4 The Benefits of Reducing Barriers to International Trade
    6. Key Terms
    7. Key Concepts and Summary
    8. Self-Check Questions
    9. Review Questions
    10. Critical Thinking Questions
    11. Problems
  21. 20 Globalization and Protectionism
    1. Introduction to Globalization and Protectionism
    2. 20.1 Protectionism: An Indirect Subsidy from Consumers to Producers
    3. 20.2 International Trade and Its Effects on Jobs, Wages, and Working Conditions
    4. 20.3 Arguments in Support of Restricting Imports
    5. 20.4 How Governments Enact Trade Policy: Globally, Regionally, and Nationally
    6. 20.5 The Tradeoffs of Trade Policy
    7. Key Terms
    8. Key Concepts and Summary
    9. Self-Check Questions
    10. Review Questions
    11. Critical Thinking Questions
    12. Problems
  22. A | The Use of Mathematics in Principles of Economics
  23. B | Indifference Curves
  24. C | Present Discounted Value
  25. Answer Key
    1. Chapter 1
    2. Chapter 2
    3. Chapter 3
    4. Chapter 4
    5. Chapter 5
    6. Chapter 6
    7. Chapter 7
    8. Chapter 8
    9. Chapter 9
    10. Chapter 10
    11. Chapter 11
    12. Chapter 12
    13. Chapter 13
    14. Chapter 14
    15. Chapter 15
    16. Chapter 16
    17. Chapter 17
    18. Chapter 18
    19. Chapter 19
    20. Chapter 20
  26. References
  27. Index

Welcome to Principles of Microeconomics 3e (Third Edition), an OpenStax resource. This textbook was written to increase student access to high-quality learning materials, maintaining highest standards of academic rigor at little to no cost.

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About Principles of Microeconomics 3e

Principles of Microeconomics 3e aligns to the topics and objectives of most introductory microeconomics courses. The text uses conversational language and ample illustrations to explore economic theories, and provides a wide array of examples using both fictional and real-world scenarios. The third edition has been carefully and thoroughly updated to reflect current data and understanding, as well as to provide a deeper background in diverse contributors and their impacts on economic thought and analysis.

Coverage and scope

In response to faculty feedback and to ease transition to a new edition, Principles of Microeconomics 3e retains the organization of the previous editions. The book covers the breadth of economics topics and also provides the necessary depth to ensure the course is manageable for instructors and students alike. We strove to balance theory and application, as well as the amount of calculation and mathematical examples.

The book is organized into five main parts:

  • What is Economics? The first two chapters introduce students to the study of economics with a focus on making choices in a world of scarce resources.
  • Supply and Demand, Chapters 3 and 4, introduces and explains the first analytical model in economics–supply, demand, and equilibrium–before showing applications in the markets for labor and finance.
  • The Fundamentals of Microeconomic Theory, Chapters 5 through 10, begins the microeconomics portion of the text, presenting the theories of consumer behavior, production and costs, and the different models of market structure, including some simple game theory.
  • Microeconomic Policy Issues, Chapters 11 through 18, covers the range of topics in applied micro, framed around the concepts of public goods and positive and negative externalities. Students explore competition and antitrust policies, environmental problems, poverty, income inequality, and other labor market issues. The text also covers information, risk and financial markets, and public economy.
  • International Economics, Chapters 19 and 20, introduces the international dimensions of economics, including international trade and protectionism.

Changes to the third edition

The revision process incorporated extensive feedback from faculty who have used the book in their courses. They advised that the third edition changes focus on currency updates, integration of newer perspectives and more diverse contributors, and relevance to students’ lives and careers.

Current data and analysis: The authors have updated dozens of explanations, graphs, and tables containing financial, demographic, employment, and related economic data. The corresponding discussions provide context and interpretations of the data, including descriptions of change over time, cause-and-effect relationships, and balanced analysis of policies and opinions.

Diverse perspectives and contributors: The third edition highlights the research and views of a broader group of economists. These include people from across the spectrum of economic thought, with a particular focus on those who take what are often considered non-traditional views of economic policy and government action. Examples include:

  • Chapter 1: Esther Duflo, Abhijit Banerjee, and Michael Kremer regarding experimental analysis in development economics.
  • Chapter 4: Walter Williams and Thomas Sowell regarding the downsides of minimum wages.
  • Chapter 13: Carlota Perez regarding employment shifts resulting from innovation; Mariana Mazzucato regarding government involvement in innovation; Elinor Ostrom and the “non-tragedy of the commons.”
  • Chapter 14: William A. Darity Jr. on employment discrimination and market forces; Phyllis Ann Wallace and the EEOC.

Relevance and engagement: In order to show the importance and application of economics in students’ lives and careers, the third edition directly addresses and expands topics likely to connect to various industries, issues, groups, and events. Brief references and deeply explored socio-political examples have been updated to showcase the critical—and sometimes unnoticed—ties between economic developments and topics relevant to students. Examples include education spending, the value of college degrees, discrimination, environmental policies, immigration policies, entrepreneurship and innovation, healthcare and insurance, and general financial literacy. Finally, the COVID-19 pandemic is referenced frequently to demonstrate its deep and evolving impacts on financial data, employment, and other aspects of the economy.

FRED Data and Graphs: As in previous editions, the authors have included and referenced data from the Federal Reserve Economic Data (FRED). In some cases, interactive FRED graphs are embedded directly in the web view of the book; students may magnify and focus on specific time periods, analyze individual data points, and otherwise manipulate the graphs from within the OpenStax reading experience. In others cases (and in the PDF), links to the direct source of the FRED data are provided, and students are encouraged to explore the information and the overall FRED resources more thoroughly. Note that other data sources, such as the Bureau of Labor Statistics, U.S. Census Bureau, and World Bank, usually include links in the captions or credits; instructors and students can also explore those sites for more detailed investigations of the topics at hand.

Updated art

Principles of Microeconomics 3e includes updated and redesigned art to clarify concepts and provide opportunities for graphical interpretation. Many graphs are shown with accompanying data tables and explanations of the drivers and consequences of change.

This graph illustrates the market for credit card borrowing and lending. It shows what happens when there is a price ceiling on credit card interest rates, set below the equilibrium credit card interest rate. A shortage of or excess demand for credit card borrowing is illustrated as the horizontal distance between the now higher quantity demanded of credit card borrowing, and the now lower quantity supplied of credit card lending.
The first illustration shows that workforce, human capital, physical capital, and technology produce GDP. The second illustration shows that human capital per person, physical capital per person, and technology per person produce GDP per capital.

Pedagogical foundation

The narrative explanations and analysis presented in Principles of Microeconomics 3e have been carefully crafted to provide a solid basis in economic concepts, flexibly approach skills and assess understanding, and deepen students’ engagement with the course materials. You will also find features that promote economic inquiry and explorations, including:

  • Bring It Home: These explorations include a brief case study, specific to each chapter, which connects the chapter’s main topic to the real world. It is broken up into two parts: the first at the beginning of the chapter (in the Intro module) and the second at chapter’s end, when students have learned what’s necessary to understand the case and “bring home” the chapter’s core concepts.
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Questions for each level of learning

Principles of Microeconomics 3e offers flexibility in practice and assessment, and provides a range of opportunities to check understanding and encourage deeper thinking and application.

  • Self-Checks are analytical self-assessment questions that appear at the end of each module. They “click to reveal” an answer in the web view so students can check their understanding before moving on to the next module. Self-Check questions are not simple look-up questions. They push the student to think beyond what is said in the text. Self-Check questions are designed for formative (rather than summative) assessment. The questions and answers are explained so that students feel like they are being walked through the problem.
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  • Critical Thinking Questions are higher-level, conceptual questions ask students to demonstrate their understanding by applying what they have learned in different contexts.
  • Problems are exercises give students additional practice working with the analytic and computational concepts in the module.

About the Authors

Senior contributing authors

David Shapiro, Pennsylvania State University
 David Shapiro is Professor Emeritus of Economics, Demography, and Women’s, Gender, and Sexuality Studies at the Pennsylvania State University. He received a BA in Economics and Political Science from the University of Michigan, and an MA as well as a PhD in Economics from Princeton University. He began his academic career at Ohio State University in 1971, and moved to Penn State in 1980. His early research focused on women and youth in the United States labor market. Following a 1978-79 stint as a Fulbright professor at the University of Kinshasa in the Democratic Republic of the Congo, his research shifted focus to fertility in Kinshasa and more broadly, in sub-Saharan Africa. He has also received the top prize for teaching at both Ohio State and Penn State.

Daniel MacDonald, California State University, San Bernardino
 Professor Daniel MacDonald is the Chair of the Economics Department at California State University, San Bernardino. He earned his BA in mathematics and economics from Seton Hall University in 2007 and his economics PhD from the University of Massachusetts Amherst in 2013. Macdonald conducts economic research in labor economics, public policy (housing), and the economic history of the U.S. Consulting. He is also the author of the weekly Inland Empire Economic Update newsletter, which he started in 2021.

Steven A. Greenlaw, Professor Emeritus at University of Mary Washington
 Steven Greenlaw taught principles of economics for 39 years. In 1999, he received the Grellet C. Simpson Award for Excellence in Undergraduate Teaching at the University of Mary Washington. He is the author of Doing Economics: A Guide to Doing and Understanding Economic Research, as well as a variety of articles on economics pedagogy and instructional technology, published in the Journal of Economic Education, the International Review of Economic Education, and other outlets. He wrote the module on Quantitative Writing for Starting Point: Teaching and Learning Economics, the web portal on best practices in teaching economics. Steven Greenlaw lives in Alexandria, Virginia with his wife Kathy. Since retiring from full-time teaching, he has been doing faculty development work and other writing projects.

Contributing authors

Eric Dodge, Hanover College
 Cynthia Gamez, University of Texas at El Paso
 Andres Jauregui, Columbus State University
 Diane Keenan, Cerritos College
 Dan MacDonald, California State University, San Bernardino
 Amyaz Moledina, The College of Wooster
 Craig Richardson, Winston-Salem State University
 Ralph Sonenshine, American University

Reviewers

Bryan Aguiar, Northwest Arkansas Community College
 Basil Al Hashimi, Mesa Community College
 Jennifer Ball, Washburn University
 Emil Berendt, Mount St. Mary's University
 Zena Buser, Adams State University
 Douglas Campbell, The University of Memphis
 Sanjukta Chaudhuri, University of Wisconsin-Eau Claire
 Xueyu Cheng, Alabama State University
 Robert Cunningham, Alma College
 Rosa Lea Danielson, College of DuPage
 Steven Deloach, Elon University
 Debbie Evercloud, University of Colorado Denver
 Sal Figueras, Hudson County Community College
 Reza Ghorashi, Stockton University
 Robert Gillette, University of Kentucky
 George Jones, University of Wisconsin-Rock County
 Charles Kroncke, College of Mount St. Joseph
 Teresa Laughlin, Palomar Community College
 Carlos Liard-Muriente, Central Connecticut State University
 Heather Luea, Kansas State University
 Charles Meyrick, Housatonic Community College
 William Mosher, Nashua Community College
 Michael Netta, Hudson County Community College
 Nick Noble, Miami University
 Joe Nowakowski, Muskingum University
 Shawn Osell, University of Wisconsin, Superior
 Mark Owens, Middle Tennessee State University
 Sonia Pereira, Barnard College
 Brian Peterson, Central College
 Jennifer Platania, Elon University
 Robert Rycroft, University of Mary Washington
 Adrienne Sachse, Florida State College at Jacksonville
 Hans Schumann, Texas A&M University
 Gina Shamshak, Goucher College
 Chris Warburton, John Jay College of Criminal Justice, CUNY
 Mark Witte, Northwestern University
 Chiou-nan Yeh, Alabama State University

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