Welfare Economics Lecture Notes

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Questions and Answers

What is the primary goal of welfare economics?

Maximizing social welfare

Which of the following are considered objectives of welfare economics? (Select all that apply)

  • Equity and Efficiency (correct)
  • Maximizing Social Welfare (correct)
  • Cost-Benefit Analysis (correct)
  • Sustainability

Utilitarian social welfare functions sum the utilities of all individuals in society.

True (A)

The Rawlsian social welfare function maximizes the utility of the worst-off individual in society.

<p>True (A)</p> Signup and view all the answers

A situation is Pareto efficient if it is impossible to make one person better off without making at least one other person worse off.

<p>True (A)</p> Signup and view all the answers

Which of the following is NOT a type of market failure discussed?

<p>Price Controls (F)</p> Signup and view all the answers

Deadweight loss results from a market that is not in equilibrium.

<p>True (A)</p> Signup and view all the answers

Which of the following is NOT a consequence of market failures on social welfare?

<p>Increased social disruption. (A)</p> Signup and view all the answers

Consumer Surplus measures the difference between what consumers are willing to pay for a good/service and what they actually pay.

<p>True (A)</p> Signup and view all the answers

Producer Surplus measures the difference between the minimum price producers are willing to accept for a good/service and what they receive.

<p>True (A)</p> Signup and view all the answers

What is the difference between consumer surplus and producer surplus?

<p>Consumer surplus is the difference between what consumers are willing to pay and what they actually pay. Producer surplus is the difference between the minimum price producers are willing to accept and what they actually receive.</p> Signup and view all the answers

Define Deadweight Loss?

<p>The loss of economic efficiency that occurs when a market is not in equilibrium.</p> Signup and view all the answers

The Hicks-Kaldor criterion states that a change is considered efficient if it can compensate those who are harmed by a change in a way that leaves those who benefit better off than before.

<p>True (A)</p> Signup and view all the answers

The Free-Rider problem arises because of the non-excludability characteristic of public goods.

<p>True (A)</p> Signup and view all the answers

Positive externalities lead to overproduction of goods and services because the market does not fully capture the benefits.

<p>False (B)</p> Signup and view all the answers

Negative externalities lead to overproduction of goods and services because the market does not fully account for the costs.

<p>True (A)</p> Signup and view all the answers

Cap-and-trade systems provide a limit on the total amount of pollution that can be emitted, and allow firms to trade pollution permits.

<p>True (A)</p> Signup and view all the answers

The tragedy of the commons occurs when individuals overuse a shared resource, leading to its depletion.

<p>True (A)</p> Signup and view all the answers

Equity refers to the fair distribution of resources and opportunities among individuals in society.

<p>True (A)</p> Signup and view all the answers

Progressive taxation involves taxing higher incomes at a higher rate than lower incomes.

<p>True (A)</p> Signup and view all the answers

The Lorenz Curve is a graphical representation of income distribution.

<p>True (A)</p> Signup and view all the answers

Social legislation includes laws that protect labor rights and regulate workplace safety.

<p>True (A)</p> Signup and view all the answers

A country has a comparative advantage in producing a good if it can produce that good more efficiently than another country.

<p>False (B)</p> Signup and view all the answers

The Heckscher-Ohlin model explains international trade based on differences in factor endowments

<p>True (A)</p> Signup and view all the answers

Protectionism is a policy that encourages international trade.

<p>False (B)</p> Signup and view all the answers

The goal of Trade Agreements is to reduce or eliminate trade barriers.

<p>True (A)</p> Signup and view all the answers

Behavioral Economics combines insights from psychology and economics to understand how individuals make decisions, challenging the traditional economic assumptions of rationality and self-interest.

<p>True (A)</p> Signup and view all the answers

Development Economics focuses on the economic challenges and opportunities faced by underdeveloped countries.

<p>True (A)</p> Signup and view all the answers

Climate Change poses no real risks to agriculture, infrastructure, and human health.

<p>False (B)</p> Signup and view all the answers

Mitigation refers to reducing greenhouse gas emissions to limit the extent of climate change.

<p>True (A)</p> Signup and view all the answers

Adaptation refers to preparing for the impacts of climate change through measures such as building resilience and investing in climate-resilient infrastructure.

<p>True (A)</p> Signup and view all the answers

Carbon pricing is a market-based incentive for reducing emissions.

<p>True (A)</p> Signup and view all the answers

Flashcards

Welfare Economics

A branch of economics studying how economic policies affect societal well-being.

Social Welfare

Overall well-being of society.

Utility

Satisfaction derived from goods/services, subjective.

Pareto Efficiency

No one can be better off without harming someone.

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Equity

Fair distribution of resources.

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Market Failure

Market fails to allocate resources efficiently.

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Externality

Unintended effects on third parties.

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Public Good

Non-rivalrous, non-excludable good.

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Free-Rider Problem

People benefit without contributing.

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Asymmetric Information

One party has more information than the other.

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Deadweight Loss

Lost efficiency from market not at equilibrium.

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Cost-Benefit Analysis

Evaluating project costs vs. benefits.

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Consumer Surplus

Net benefit to consumers from market.

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Producer Surplus

Net benefit to producers from market.

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Absolute Advantage

Producing something using fewer resources.

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Comparative Advantage

Lower opportunity cost in production.

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Protectionism

Restricting international trade.

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Trade Agreement

Formal deal reducing trade barriers.

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Behavioral Economics

Economics incorporating psychology.

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Development Economics

Focuses on developing countries.

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Climate Change

Global warming and environmental effects.

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Study Notes

Lecture Notes on Welfare Economics

  • No part of these lecture notes may be reproduced, copied, or distributed without permission. These notes are for classroom use only and are an exception to copyright under Fair Use Doctrine. (Section 185. Fair Use of a Copyrighted Work).

List of Topics

  • Topic 1: Introduction to Welfare Economics
  • Topic 2: Market Efficiency and Welfare
  • Topic 3: Tools of Welfare Analysis
  • Topic 4: Public Goods and Externalities
  • Topic 5: Income Distribution and Equity
  • Topic 6: Welfare Economics and International Trade
  • Topic 7: Current Issues in Welfare Economics

Topic 1-A: Understanding Welfare Economics

  • Objectives of Welfare Economics: maximizing social welfare, balancing equity and efficiency, cost-benefit analysis
  • Relationship with other economic fields: microeconomics, macroeconomics, public economics, environmental economics, and development economics

Topic 1-B: Utility, Social Welfare Functions, Pareto Efficiency, and Equity

  • Utility: a measure of satisfaction from consuming goods and services (cardinal vs. ordinal)
  • Social Welfare Functions: aggregate individual utilities into a single measure of overall social welfare (Utilitarian, Rawlsian, Social Contractarian)
  • Pareto Efficiency: a situation where it's impossible to make one person better off without harming at least one other person.
  • Equity: fair distribution of resources and opportunities; trade-off with efficiency

Topic 1-C: A Brief Overview of Welfare Economics Development

  • Early Foundations (18th Century): Adam Smith, Jeremy Bentham
  • Marginal Revolution (Late 19th Century): Jevons, Menger, Walras (marginal utility theory)
  • Pareto Criterion (Early 20th Century): Vilfredo Pareto (Pareto improvement)
  • New Welfare Economics (Mid-20th Century): Hicks, Kaldor, Meade (compensating variations, equivalent variations)
  • Modern Welfare Economics: public, environmental, and behavioral economics

Perfect Competition: A Theoretical Ideal

  • Many buyers and sellers
  • Homogeneous products
  • Perfect information
  • Free entry and exit
  • Implications: efficient allocation of resources, consumer surplus. producer surplus, innovation, social welfare maximization
  • Limitations: market power, product differentiation, information asymmetry, barriers to entry

Market Failures: When Markets Don't Work

  • Externalities (positive and negative)
  • Public Goods
  • Asymmetric Information (used car market, insurance, labor, and financial markets)
  • Monopoly and Oligopoly

Topic 4: Public Goods and Externalities

  • Public Goods: non-rivalrous, non-excludable, free-rider problem, optimal provision (compulsory taxation, direct provision, regulation, private provision)
  • Externalities: positive (e.g., education) and negative (e.g., pollution) consequences affecting third parties, market failure, policy solutions (e.g., subsidies, taxes, regulation).

Topic 5: Income Distribution and Equity

  • Income inequality: measures (Gini coefficient, Lorenz curve)
  • Implications: reduced economic growth, social unrest, reduced health and well-being, intergenerational inequality
  • Addressing income inequality: progressive taxation, social welfare programs, education and training, labor market reforms

Topic 6: Welfare Economics and International Trade

  • Gains from Trade (specialization, increased variety, economies of scale)
  • Absolute Advantage
  • Comparative Advantage
  • Heckscher-Ohlin Model
  • Protectionism (tariffs, quotas, subsidies)
  • Trade agreements (GATTS, NAFTA, WTO, EU)

Topic 7: Current Issues in Welfare Economics

  • Behavioral economics: bounded rationality, loss aversion, status quo bias, social norms, nudges
  • Development economics: poverty, economic growth, inequality, sustainability
  • Climate Change and Welfare Analysis: Physical damages, economic losses, uncertainty, policy responses (mitigation, adaptation, carbon pricing)

Lesson G: Consumer Surplus

  • Graphical representation (area below demand curve and above market price)
  • Calculation: difference between what consumers are willing to pay and actual price
  • Examples

Lesson H: Producer Surplus

  • Graphical representation (area above supply curve and below market price)
  • Calculation: difference between minimum price producers are willing to accept and actual price
  • Examples

Lesson I: Deadweight Loss

  • Graphical representation (triangle-shaped area between supply and demand curves). Loss of economic efficiency that occurs when the market is not in equilibrium
  • Causes of deadweight loss (market failures, monopolies, taxes, subsidies, price controls).
  • Examples

Lesson J: Cost-Benefit Analysis

  • Steps in cost-benefit analysis (identify costs and benefits, quantify in monetary terms, discount future costs and benefits to present value, compare net present value).
  • Hicks-Kaldor criterion (evaluates if a change leads to more benefits than costs, compensating those harmed)

Lesson W: Climate Change and Welfare Analysis

  • Economic implications of climate change
  • Policy responses (mitigation, adaptation, carbon pricing)
  • Cost-benefit analysis and welfare analysis of climate change policies: Intergenerational equity is considered here
  • Distributional effects

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