05 Market failure Lecture Notes_H2_2023

Topic 5: Market Failure and Government Intervention

  • Reference: Mankiw, Principles of Economics; Sloman, Economics; O'Sullivan et al, Principles of Economics.

  • Learning Objectives:

    • Define market failure and its various sources.

    • Explain government interventions for each source of market failure and their limitations.

    • Discuss government failure and cognitive biases to influence economic decisions.

Questions for Reflection

  • Is the price mechanism always the best way to allocate resources?

    • Market forces can lead to inefficient resource allocation for certain goods.

  • What is the role of government in a free market economy?

    • To correct market failures.

  • What implications does government decision-making have?

    • It incurs opportunity costs with intended and unintended consequences.

  • How can cognitive biases help shape government policies?

    • Understanding biases (like sunk cost fallacy and loss aversion) can enhance policy effectiveness.

Contents Overview

  1. Introduction

  2. Overview of Market Failure

  3. Externalities and Government Intervention

  4. Imperfect Information and Government Intervention

  5. Public Goods and Government Intervention

  6. Factor Immobility

  7. Inequity

  8. Government Failure

  9. Behavioural Economics in Government Policies

  10. Conclusion

1. Introduction

  • Efficiency: Allocative efficiency maximizes social welfare; when MSB = MSC, indicating optimal consumption of goods.

  • Equity: Fair distribution of goods/services; ensures access to essential services regardless of income.

2. Overview of Market Failure

2.1 Meaning of Market Failure

  • Definition: Market failure occurs when free markets fail to allocate resources efficiently.

2.2 Sources of Market Failure

  1. Externalities

  2. Information Failure

  3. Public Goods

  4. Factor Immobility

  5. Market Dominance (not covered)

3. Externalities and Government Intervention

3.1 Negative Externalities

  • Definition: External costs imposed on third parties.

  • Examples: Pollution from production, secondhand smoke from cigarettes.

  • Correcting Market Failure:

    • Policies: Taxes, legislation, tradable permits.

3.2 Positive Externalities

  • Definition: External benefits enjoyed by third parties.

  • Examples: Vaccinations benefiting community health.

  • Correcting Market Failure:

    • Policies: Subsidies, direct provision, education campaigns.

4. Imperfect Information and Government Intervention

4.1 Market Failure due to Misestimating Costs/Benefits

  • Examples: Underestimation of personal health risks.

4.2 Asymmetric Information

  • Adverse Selection: Markets can collapse due to unbalanced information.

  • Moral Hazard: Increased risk-taking due to insurance coverage.

5. Public Goods and Government Intervention

Characteristics

  • Non-excludability: Cannot prevent non-payers from usage.

  • Non-rivalry: One person's consumption does not reduce availability for others.

Government Provision

  • Direct provisioning necessary due to absence of market solutions.

6. Factor Immobility

  • Types: Occupational (skills mismatch) and geographical (movement constraints).

  • Government Interventions: Education subsidies, infrastructure improvements.

7. Inequity

  • Define inequity as a moral issue affecting access to services like healthcare and education.

  • Government Interventions: Subsidies, price controls, direct provision of essential services.

8. Government Failure

Meaning of Government Failure

  • Occurs when interventions worsen the situation or do not improve outcomes.

Reasons for Government Failure

  • Imperfect information, high administrative costs, lack of profit motive.

9. Behavioural Economics in Government Policies

Cognitive Biases

  • Sunk Cost Fallacy: Continued investment due to prior costs.

  • Loss Aversion: Fear of losses outweighing equivalent gains affecting behavior.

  • Salience Bias: Attention prioritized on noticeable information, often leading to poor decisions.

Practical Applications

  • Using cognitive biases to inform policy design and implementation to nudge better decisions.

10. Conclusion

  • Market failures present many challenges; thus, governments must carefully weigh interventions. The uniqueness of each failure requires tailored responses and understanding of behavioral economics can enhance policy effectiveness.