ECON100 Review PDF
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This document is a review of concepts covered in a course titled ECON100, covering the history of economic thought, including theories like monopolistic competition, Keynesian and Monetarist revolutions, the Marginalist Revolution, Classical and Behavioral Economics, and ethical foundations of economics. It traces the evolution of economic ideas from ancient philosophers to modern economists.
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CHAPTER 1: AN OVERVIEW OF THE HISTORY OF ECONOMICS IDEAS 1. Monopolistic Competition: Edward Chamberlain and Joan Robinson contributed significantly to the understanding of monopolistic competition, emphasizing non-price competition and product differentiation, which allow firms to gain...
CHAPTER 1: AN OVERVIEW OF THE HISTORY OF ECONOMICS IDEAS 1. Monopolistic Competition: Edward Chamberlain and Joan Robinson contributed significantly to the understanding of monopolistic competition, emphasizing non-price competition and product differentiation, which allow firms to gain some monopoly power. 2. Keynesian Revolution: John Maynard Keynes revolutionized macroeconomic theory during the Great Depression, arguing that insufficient aggregate demand led to high unemployment and advocating for government intervention through fiscal policy to stimulate demand. 3. Monetarist Counterrevolution: Milton Friedman challenged Keynesian economics by proposing the permanent income theory of consumption and receiving the quantity theory of money, asserting that money supply directly affects price levels. 4. Marginalist Revolution: The late 19th century saw the emergence of marginal utility as the basis for value, led by economists like William Stanley Jevons, Carl Menger, and Léon Walras, marking a shift from Classical theories focused on labor. 5. Classical Economics: Adam Smith laid the groundwork for Classical economics, emphasizing the division of labor and self-interest as drivers of economic growth. David Ricardo and Thomas Malthus further developed key concepts like comparative advantage and population dynamics. 6. Behavioral and Experimental Economics: Recent developments include behavioral economics, which examines psychological factors influencing decision-making, and experimental economics, which tests economic theories through controlled experiments. 7. Influence of Non-European Thinkers: While the focus is primarily on European scholars, significant contributions from thinkers like Confucius and al-Ghazâlî are acknowledged, highlighting the global context of economic thought. 8. Mercantilism and Physiocracy: The transition from feudalism to nation-states saw the rise of mercantilism, which prioritized national wealth through trade balance, and the Physiocrats, who advocated for laissez-faire policies and recognized agriculture as the source of wealth. CHAPTER 2: THE ETHICAL FOUNDATIONS OF ECONOMICS 1. Ethical Foundations of Economics: - Economics often deals with scarce resources, but these decisions have ethical dimensions. - Ethical questions are central to market interactions, influencing theories from ancient philosophers to modern economists. - Ancient economic thought emerged from moral philosophy, focusing on virtues like justice and moderation. 2. Normative Ethical Theories - Virtue Ethics: - Originates with Plato and Aristotle. - Focus: Developing virtuous habits for a balanced character. - Aristotle's "Golden Mean": Virtues lie between extremes (e.g., courage lies between recklessness and cowardice). - Encourages ethical actions through moral character. - Deontological Ethics: - Emphasizes duty and rules. - Associated with philosophers like Immanuel Kant. - Actions are judged based on adherence to principles, irrespective of outcomes. - Consequentialist Ethics: - Focuses on the outcomes of actions. - Utilitarianism: Maximizing happiness for the greatest number. - Pioneered by Jeremy Bentham and refined by John Stuart Mill. - Influenced the development of utility theory in economics. 3. Ancient Economic Thought - Plato - Justice arises from individuals fulfilling their societal roles without interference. - Warned against excessive wealth accumulation leading to instability. - Advocated for moderation and a structured class system for harmony. - Aristotle - Distinguished between distributive justice (fair distribution based on merit) and commutative justice (fairness in exchanges). - Justice maintains social harmony through proportionate allocation of resources. 4. Ethics in the Scholastic Tradition - Thomas Aquinas: - Ethical principles apply to all human interactions, including commerce. - Trade isn’t sinful if it serves the common good and avoids greed. - Late Scholastics, like the Spanish School of Salamanca, recognized the value of entrepreneurship in just economic activity. 5. Adam Smith’s Moral Philosophy - Known for The Wealth of Nations and The Theory of Moral Sentiments. - Argued that self-interest drives markets but must be balanced by virtues like justice and benevolence. - Introduced the Impartial Spectator: An internal guide for ethical decision-making based on societal norms. - Emphasized the importance of empathy ("sympathy") in human behavior and societal well-being. 6. Utilitarianism in Economics - Jeremy Bentham: - Utility = Balance of pleasure and pain. - Happiness is the ultimate goal of actions. - John Stuart Mill: - Introduced qualitative differences in pleasures (higher vs. lower pleasures). - Criticized Bentham for oversimplifying human motivations. 7. Modern Economics: - Utility theory underpins consumer choice models. - Introduced diminishing marginal utility: Additional consumption provides less satisfaction. 8. Ethical Perspectives by Rawls and Sen - John Rawls (A Theory of Justice): - Introduced the veil of ignorance: Decisions about justice should be made without knowing one’s position in society. - Proposed two principles: - Liberty Principle: Equal basic rights for all. - Justice Principle: Social inequalities are acceptable only if they benefit the least advantaged. - Amartya Sen: - Critiqued narrow utility-maximization assumptions. - Introduced the capabilities approach: - Focuses on individuals' abilities to achieve well-being. - Quality of life is measured by opportunities and freedoms. 9. Behavioral and Experimental Economics - Challenges the idea that humans act purely in self-interest. - Experiments demonstrate ethical norms like trust, reciprocity, and fairness. - Examples: - Ultimatum Game: Responders often reject unfair offers, prioritizing fairness over monetary gain. - Trust Games: Participants exhibit trust and reciprocity even without enforceable agreements. - Animal Studies: Capuchin monkeys demonstrate a sense of fairness in experiments. 10. Key Figures and Contributions - Plato: Justice in societal roles. - Aristotle: Proportional fairness in resource distribution. - Thomas Aquinas: Ethical commerce. - Adam Smith: Balance between self-interest and social virtues. - Jeremy Bentham: Pleasure-pain calculus. - John Stuart Mill: Quality of happiness and higher virtues. - Amartya Sen: Focus on human dignity and freedoms. CHAPTER 3: PROPERTY RIGHTS FROM PLATO TO THE 21ST CENTURY 1. Key Concepts of Property Rights - Definition: Bundles of rights defining legal ownership and transfer of assets - Forms: - Private Property: Owned by individuals or entities with rights to exclude others. - Common Property: Shared by a group with collective decision-making rights. - Open-Access Property: No restrictions on use (e.g., air, oceans). - Public Property: Managed by governments for public use. 2. Historical Evolution Ancient Greece - Plato: - Advocated common property for rulers to maintain social cohesion. - Limited private property with restrictions to prevent inequality. - Aristotle: - Defended private property, highlighting: - Incentives for productivity. - Personal satisfaction and pride. - Opportunities for philanthropy. - Better social harmony. Middle Ages - Christian Views: - Early theologians viewed property as God’s common gift to humanity. - St. Augustine: Private property arose from human laws, though common ownership was ideal. - St. Thomas Aquinas: Private property aligns with natural law and supports societal order. 3. Enlightenment Thinkers - Thomas Hobbes: - Property arises from state authority to maintain order. - Property rights are social constructs, not natural rights. - John Locke: - Property originates from labor applied to nature. - Advocated moderation and limited resource use to ensure equality. - David Hume: - Property rights emerge from the need for justice in complex societies. - Supported private property to minimize conflict. 4. Classical Economists - Adam Smith: - Labor is the foundation of property rights. - Property is critical for societal stability and economic growth. - John Stuart Mill: - Private property promotes economic progress. - Utilitarian view: Rights are justified if they benefit the majority. 5. Modern Economics - Karl Marx: - Criticized private property as a tool for class exploitation. - Advocated for collective ownership to end class divisions. - Friedrich Hayek & Milton Friedman: - Supported private property for freedom and efficient resource allocation. - Argued it protects individual liberties and incentivizes innovation. 6. Role of Property Rights in Development - Economic Growth: - Links work effort to reward, fostering productivity. - Secures investments and supports market efficiency. - Challenges: - Weak property rights lead to overuse (e.g., "tragedy of the commons"). - Lack of formal titles in developing countries hinders access to credit and wealth creation. - Empirical Evidence: Studies show a strong correlation between secure property rights and high per capita income. 7. Intellectual Property Rights - Includes copyrights, patents, trademarks, and trade secrets. - Balances incentives for innovation with societal efficiency CHAPTER 4: THE EMERGENCE OF MODERN PRICE THEORY 1. Overview of Price Theory - Modern price theory focuses on market value, determined by supply and demand. - Key historical milestones: - First supply-demand graph: Augustin Cournot’s 1838 work. - Popularized by Alfred Marshall’s 1890 Principles of Economics. - Ancient/medieval views of exchange emphasized justice and ethics, not market mechanics. 2. Aristotle’s Contributions - Distinguished between use value (utility for personal use) and exchange value (trade worth). - Believed value arises from utility and requires labor to manifest. - Highlighted moderation in exchange as a virtue, avoiding excess and ensuring fairness. 3. The Just Price Concept - Originated in Roman and medieval Scholastic thought. - Just Price: Equitable price based on social utility, costs, and market conditions. - Tools for determining just price included: - Market price as the baseline. - Comparison to similar goods. - Inputs like production costs and local advice. 4. Labor Theories of Value - Labor Theory of Value: - Dominated classical economics. - Value = amount of labor required to produce a good. - Advocated by Adam Smith and David Ricardo. - Karl Marx extended this to argue that labor was the sole source of value, forming the basis of his surplus value and exploitation theory. 5. Marginalist Revolution - Shifted from objective labor-based value to subjective value tied to buyer preferences. - Key contributors: - William S. Jevons: Introduced diminishing marginal utility. - Carl Menger: Explained higher-order goods derive value from lower-order goods satisfying needs. - Léon Walras: Developed general equilibrium theory using utility-driven demand curves. - Diminishing Marginal Utility: - Additional units of a good provide less utility. - Forms the basis for understanding consumer behavior and demand curves. 6. Alfred Marshall’s Synthesis - Combined subjective and objective theories into the modern supply-demand framework. - Innovations: - Supply and demand curves. - Use of ceteris paribus for isolating market variables. - Explained short-run and long-run differences: - Short Run: Supply is less elastic, so demand influences price more. - Long Run: Supply adjusts, often determining price. - Introduced time period analysis: - Market period (very short run). - Short run (partial supply adjustment). - Long run (full supply adjustment). 7. Key Contributions - Classical Economists - Adam Smith: Natural price is determined by production costs (labor, capital, rent). - David Ricardo: Refined labor theory but excluded land rent. - John Stuart Mill: Incorporated supply-demand equilibrium. - Marginalist Economists - Focused on utility rather than labor as the source of value. - Unified use value and exchange value into a single concept. 8. Implications for Modern Economics - Supply and Demand Diagrams: Price determined at equilibrium, where quantity demanded equals quantity supplied. - Consumer Behavior: Consumers maximize utility by balancing marginal utilities relative to prices across goods. - Value Origins: Combination of utility (demand) and costs of production (supply). CHAPTER 5: MONEY, LENDING, AND INTEREST 1. Evolution and Functions of Money - Barter System Issues: Double coincidence of wants problem, leading to the need for money. - Functions of Money: Medium of exchange, measure of value, and later a store of value. 2. Historical Perspectives on Usury Ancient Laws and Views: - Prohibited or limited in Mosaic Code and Hammurabi’s Code. - Viewed negatively in biblical passages, Greek philosophy (e.g., Plato and Aristotle), and Roman law. - Early Islamic scholars like Ibn Taymiyyah opposed usury based on moral and religious grounds. - Scholastics emphasized the "sterility of money" and justice-based objections. Christian and Church Views: - Declared usury a sin. - Introduced exceptions for business loans during the Middle Ages. Changing Perceptions During the Commercial Age - 16th-century shifts, influenced by: - John Calvin: Distinction between legitimate business loans and exploitative distress loans. - Increased acceptance of interest in growing commercial societies (e.g., Florence’s Mount of Piety). 3. Classical and Modern Economic Thoughts Classical Economists: - Adam Smith supported capped interest rates to prevent speculative risks while encouraging investments. - Jeremy Bentham opposed usury laws, emphasizing market freedom and mutual benefits. Modern Perspectives: - Criticism of interest rate controls as creating shortages in credit availability. - Evidence suggests higher maximum interest rates encourage credit availability. 4. Key Theories and Impacts - Gresham's Law: Bad money drives out good money, relevant to currency debasement. - Mercantilist Ideas: Advocated for controlling interest rates to stimulate trade (e.g., Sir Thomas Culpeper). - Social Justice: Ancient and religious laws on usury often acted as early social insurance to protect the poor. 5. Contemporary Relevance - Islamic Banking: Prohibitions on interest continue in modern Islamic finance. - Current Interest Rate Ceilings: Persist in Europe and the U.S., including for credit cards and student loans. CHAPTER 6: PUBLIC FINANCE IN HISTORICAL PERSPECTIVE 1. Introduction to Public Finance - Governments finance spending through taxation and debt. - National debt differs from budget deficits: debt is cumulative, while deficits are annual shortfalls. - The debt-to-GDP ratio measures the size of the debt relative to the economy. 2. Ancient and Early Theories of Taxation - Ancient World: Taxes existed in forms like grain and livestock payments. - Classical Greece: Plato and Aristotle discussed taxation in terms of justice and wealth redistribution. - Mercantilists: Taxes should support national power and trade surpluses. 3. Key Historical Contributions to Taxation - Thomas Hobbes: Advocated consumption-based taxes to promote equality and discourage idleness. - William Petty: Proposed proportional taxes based on benefits received from the state. Physiocrats and Tax Reforms - Proposed l’impôt unique, a single tax on land, to reduce tax complexity and inequality. - Criticized regressive tax systems of the French ancien régime that exempted elites. 4. Classical Economics and Public Debt - David Hume and Adam Smith: - Criticized public debt for diverting resources from private capital accumulation. - Advocated balanced budgets and controlled borrowing to avoid future tax burdens. - Ricardian Equivalence: Government borrowing today leads to higher future taxes, effectively reducing current private consumption. 5. Adam Smith’s Taxation Principles Smith's Four Maxims: - Tax in proportion to ability to pay. - Taxes should be certain and not arbitrary. - Taxes should be convenient for taxpayers. - Taxes should minimize collection costs and inefficiencies. 6. 19th Century Taxation Views - Jean-Baptiste Say: Emphasized avoiding excessive taxes to encourage capital formation. - David Ricardo: - Advocated for minimal taxes to reduce distortions. - Suggested land taxes fall on landowners, minimizing broader economic harm. 7. Debates on Progressivity and Equity - John Stuart Mill: Opposed progressive taxes on income but supported taxing unearned wealth like inheritances. - Henry George: Advocated a single tax on unimproved land value to avoid disincentives for productivity. 8. Modern Taxation Theory - Keynesian Approach: - Deficit spending can stimulate demand and economic activity. - Favored public borrowing to counter economic downturns but opposed perpetual debt. - Optimal Taxation (Frank Ramsey and James Mirrlees): - Tax inelastic goods more heavily to reduce distortions. - Balances equity and efficiency, considering differences in taxpayer abilities. 9. Innovative Tax Systems - Flat Tax: Advocated by Friedrich Hayek and Milton Friedman for simplicity and neutrality. - Negative Income Tax: Proposed by Friedman as a direct welfare mechanism for low-income individuals. - Consumption Taxes: Preferred by some economists for efficiency and fairness. 10. Public Choice Theory - Explains how voter incentives and government policies often misalign due to rational ignorance in democracies. - Focus on designing tax systems that minimize political manipulation. CHAPTER 7: DEPRESSING THOUGHTS – THEORIES OF RECESSIONS AND DEPRESSIONS 1. Introduction to Business Cycles - Early economic downturns linked to natural causes (e.g., crop failures) before modern business cycles were identified. - Modern cycles were recognized in the 19th century, with recurring phases: confidence, overtrading, distress, and recovery. - Recessions occur when real GDP falls for an extended period, often defined as two consecutive quarters of decline. 2. Pre-Classical Theories - John Locke (1691): - Linked monetary changes to economic stagnation. - Developed early ideas resembling the Fisher equation of exchange (MV = PT). - Richard Cantillon: - Coined "Cantillon effects," describing how new money injections affect prices unequally. - Demonstrated how monetary disturbances create cycles of economic activity. - David Hume: Emphasized the short-term non-neutrality of money, where changes in money supply affect production and employment. 3. Classical Economic Theories - Say’s Law of Markets: Supply creates its own demand, suggesting long-term recessions are impossible. - Thomas Malthus: Critiqued Say’s Law, highlighting demand deficiencies and class-based consumption disparities. Predicted imbalances between production and consumption lead to "general gluts." - David Ricardo: Defended Say’s Law, arguing markets are self-correcting and imbalances are temporary. 4. Modern Theories - Keynesian Economics: - Rejected Say’s Law, arguing that economies can sustain prolonged recessions. - Introduced concepts of effective demand, marginal propensity to consume, and the multiplier effect. - Advocated government intervention through fiscal and monetary policies. - IS-LM Model (John Hicks): - Illustrates the interaction of investment-saving (IS) and liquidity-money (LM) markets. - Useful for analyzing recessions and policy responses, including liquidity traps. 5. Alternative Views - Austrian Business Cycle Theory: (F.A. Hayek) Criticized artificial interest rate manipulation, linking booms to unsustainable investments (malinvestments). - Monetarism: (Milton Friedman) Attributed the Great Depression to Federal Reserve failures. Advocated stable money supply to prevent economic volatility. 6. New Developments in Business Cycle Theories - New Classical Economics: - Emphasizes rational expectations and market adjustments through price flexibility. - Believes recessions result from random demand or supply shocks. - New Keynesian Economics: - Focuses on price and wage stickiness as barriers to market self-correction. - Highlights menu costs, money illusion, and efficiency wages as sources of rigidity. 7. Historical Examples of Recessions - Asset Bubbles: Speculation leads to crises (e.g., Tulipmania, Dot-Com bubble, 2008 financial crisis). - Great Depression: Global unemployment and GDP declines, showcasing the severity of prolonged downturns. 8. Future Directions - Integration of behavioral and experimental economics to better understand cycles. - Greater focus on historical economic crises to inform future policymaking. CHAPTER 8: ECONOMIC GROWTH THEORY IN HISTORICAL PERSPECTIVE 1. Definition and Importance of Economic Growth: - Economic growth increases material living standards, measured by per capita national product. - Key is compounding—small growth rates compound over time, significantly impacting living standards. 2. Classical Economic Growth Theory: - Adam Smith: - Division of labor enhances productivity (e.g., pin factory example). - Capital accumulation is essential for growth. - Institutional factors like property rights and law enforcement are crucial for growth. - David Ricardo: - Economic rent arises from differences in land quality. - Profits drive capital accumulation, but diminishing returns limit growth over time. - Technological advances delay the "stationary state." 3. Evolutionary Growth Theories: - Thorstein Veblen: Institutions evolve via selection processes akin to natural selection. - Joseph Schumpeter: Growth driven by "creative destruction," where new innovations replace outdated ones. 4. Neoclassical Growth Theory: - Developed by Robert Solow and Trevor Swan. - Predicts diminishing returns to capital accumulation; long-term growth driven by technological change. - Steady-state analysis: At steady state, capital and output per worker stabilize. 5. Endogenous Growth Theory: - Focuses on innovation and ideas as drivers of growth. - Paul Romer emphasized that ideas are nonrival and generate increasing returns to scale. - Knowledge spillovers enhance productivity across firms and economies. 6. Key Determinants of Growth in the Solow Model: - Savings rate: Higher savings lead to more capital and higher living standards. - Population growth: Higher rates dilute capital and lower per capita income. - Technological progress: The primary driver of long-term growth. 7. Policy Implications: - Promote savings and investment to enhance short-term growth. - Focus on technological innovation for sustained long-term growth. - Develop institutions that protect property rights and promote a conducive business environment. 8. Applications: - Importance of market size in driving specialization (Smith). - Path dependence: Historical accidents and decisions shape long-term growth trajectories. CHAPTER 9: THE HISTORY OF INTERNATIONAL TRADE THEORY 1. Pre-Classical Ideas on Trade: - Ancient philosophers like Plato and Confucius recognized the importance of trade but lacked a formal theory. - The "providentialist" theory suggested by Libanius: God distributed resources unevenly to promote commerce and interaction. 2. Mercantilist Trade Doctrine: - Focused on accumulating wealth (gold/silver) via trade surplus. - Advocated for policies to increase exports and decrease imports (e.g., tariffs, quotas). - Trade viewed as zero-sum: one nation's gain is another's loss. - Criticized later for ignoring price-specie flow effects (Hume) and consumer welfare (Smith). 3. Classical Trade Theories: - David Hume's Price-Specie Flow Mechanism: Specie inflows increase money supply and price levels, negating real wealth increases. - Adam Smith's Absolute Advantage: Countries benefit from producing goods they can produce at the lowest real cost. Gains include access to cheaper goods, enhanced specialization, and productivity growth. - David Ricardo's Comparative Advantage: Even countries without absolute advantages can benefit from trade by specializing where opportunity costs are lowest. 4. Ricardian Trade Model Assumptions: - Two countries, two goods. - Trade driven by opportunity costs, not absolute costs. - No barriers to trade; labor is the primary factor of production. 5. Heckscher-Ohlin (H-O) Model: - Focuses on factor endowments (capital and labor) to explain comparative advantage. - Labor-abundant countries export labor-intensive goods; capital-abundant ones export capital-intensive goods. 6. Stolper-Samuelson Theorem: - Free trade benefits abundant factors of production while harming scarce ones. - Explains political opposition to free trade due to concentrated losses in some sectors. 7. New Trade Theory: - Developed by Paul Krugman: - Explains intra-industry trade and emphasizes increasing returns to scale and consumer preference for diversity. - Trade occurs even between similar countries due to economies of scale and specialization. - Dynamic Comparative Advantage: - Comparative advantage evolves over time through technological advances and learning. - Example: South Korea transitioned from agriculture to industrial leadership through selective interventions. 8. Empirical Evidence on Trade: - Studies (e.g., Japan's shift from autarky) show significant economic benefits from free trade (e.g., 8–9% of GDP gain). - Barriers like tariffs or embargoes impose welfare costs (e.g., Jefferson's trade embargo cost ~8% of U.S. GNP). 9. Key Gains from Trade (John Stuart Mill): - Direct effects: Higher national incomes through specialization. - Indirect effects: Larger markets lead to productivity gains. - Intellectual and moral effects: Exposure to diverse cultures and ideas. 10. Policy Implications: - Promote free trade while addressing distributional impacts. - Encourage specialization in areas with current or potential comparative advantages.