Market Failure
- IGCSE Economics
- Theme 2: The allocation of resources
Speaker notes: Introduce the topic and its relevance to the syllabus.
Learning Objectives
- Define market failure
- Identify terms associated with market failure
- Explain causes of market failure
- Describe consequences of market failure
Speaker notes: Outline what students will learn by the end of the lesson.
Starter: Discussion
- Imagine a town where the air is heavily polluted. Who is affected and why?
Speaker notes: Encourage students to think about the impacts of pollution and introduce the concept of market failure.
Definition of Market Failure
- Occurs when the market fails to allocate resources efficiently
- Results in net loss of economic and social welfare
- Can lead to underproduction or overproduction of goods and services
Speaker notes: Explain that market failure happens when the market does not distribute resources in the best way for society, leading to inefficiencies and potential harm.
Terms Associated with Market Failure
- Public goods: Non-excludable and non-rival
- Merit goods: Under-consumed if left to the market
- Demerit goods: Over-consumed if left to the market
- Externalities: Costs or benefits affecting third parties
Speaker notes: Define each term and give brief examples to illustrate each concept.
Causes of Market Failure
- Market power: Monopolies can set prices too high
- Information failure: Asymmetric information affects decisions
- Public goods: Difficulty in excluding non-payers
- Externalities: Costs or benefits not reflected in prices
Speaker notes: Discuss each cause and how it leads to market failure, using real-world examples where possible.
Consequences of Market Failure
- Inefficient allocation of resources
- Social welfare loss
- Environmental degradation
- Health issues due to overconsumption of demerit goods
Speaker notes: Explain the negative impacts of market failure on society and the economy.
Example: Pollution and Market Failure
- A factory produces goods but pollutes the air
- The cost of pollution is not paid by the factory
- Local residents suffer from health problems
- Government may impose taxes or regulations to correct the market failure
Speaker notes: Walk through the scenario step by step, highlighting how the market fails to account for the pollution cost and the potential government interventions.
Common Mistakes and Exam Tips
- Confusing public goods with private goods
- Overlooking the role of externalities
- Miscounting the number of market failures
- Forgetting to explain the consequences in detail
Speaker notes: Highlight common errors students make and provide tips on how to avoid them in exams.
Key Terms
- Market failure
- Public goods
- Merit goods
- Demerit goods
- Externalities
- Information failure
- Market power
Speaker notes: Review the key terms and ensure students understand each one.
Plenary: Quick Check
- What is market failure?
- Give an example of a public good
- How does market power cause market failure?
- What are the consequences of market failure?
- How can government intervention correct market failure?
Speaker notes: Ask these questions to check students' understanding of the key concepts covered in the lesson.
Plenary: Summary
- Market failure occurs when resources are not allocated efficiently, leading to various negative consequences
Speaker notes: Summarize the main point of the lesson in one sentence.