A Level H1 Economics Market Failure Quiz

Answer Key - A-Level Economics H1 Quiz: Market Failure

1. Market Failure (2m)

• Definition: A situation where the free market mechanism fails to allocate resources efficiently, leading to a net welfare loss. (2)

2. Private vs. Social Cost (2m)

• Private cost: The cost incurred by the individual producer/consumer. (1)
• Social cost: The total cost to society, including private costs and external costs. (1)

3. Public Good vs. Merit Good (4m)

• Public Good: Non-excludable and non-rivalrous (e.g., street lighting). (2)
• Merit Good: Goods that are under-consumed because the consumer underestimates the benefits or ignores external benefits (e.g., education). (2)

4. Characteristics of Public Good (2m)

• Non-excludability (1)
• Non-rivalry (1)

5. Asymmetric Information (4m)

• Definition: A situation where one party in a transaction has more or better information than the other. (2)
• Example: A doctor knows more about the necessary treatment than the patient, potentially leading to over-prescription. (2)

6. Sugar-Sweetened Beverages (4m)

• Consumption leads to health issues (obesity, diabetes). (2)
• This imposes costs on third parties, such as increased public healthcare spending or loss of productivity for the economy. (2)

7. Vaccinations Diagram (6m)

• Diagram: MSB curve above MPB curve. (2)
• Analysis: Market equilibrium at MPB=MPC, but social optimum at MSB=MSC. (2)
• Conclusion: Quantity demanded at market price is lower than the socially optimal quantity, leading to under-consumption. (2)

8. National Defense (4m)

• Non-excludability: Once defense is provided, no one can be excluded from its protection. (2)
• Free-rider problem: Private firms cannot charge individuals, so there is no profit incentive to provide it. (2)

9. Information Failure & Adult Education (6m)

• Consumers may lack information regarding the long-term earnings increase or cognitive benefits of lifelong learning. (2)
• They perceive the marginal private benefit (MPB) as lower than it actually

is, leading to under-consumption. (2)
- Because the social benefit (MSB) is higher than the private benefit (MPB), the market fails to reach the socially optimal level of consumption. (2)

**10. MSB vs. MPB (4m)**
- MPB: The benefit received by the individual consumer. (1)
- MSB: The total benefit to society, including the MPB and any external benefits. (1)
- Difference: In a positive externality, MSB > MPB because the consumption benefits third parties. (2)

**11. Cigarettes Diagram (6m)**
- Diagram: MSC curve above MPC curve (or MSB below MPB). (2)
- Analysis: Market equilibrium at MPB=MPC; social optimum at MSB=MSC. (2)
- Welfare Loss: The shaded triangle between the MSC and MSB curves from the social optimum to the market quantity. (2)

**12. PED and Merit Goods (6m)**
- Inelastic PED: Consumers may be addicted or perceive the good as a necessity, making demand unresponsive to price changes. (3)
- Intervention: Taxes may be less effective at reducing consumption; government may prefer direct provision or subsidies to ensure accessibility. (3)

**13. Monopoly as Market Failure (6m)**
- Monopolies often restrict output and raise prices above the competitive level (P > MC). (3)
- This leads to allocative inefficiency and a loss of consumer surplus, creating a deadweight loss to society. (3)

**14. Free-Rider Problem (4m)**
- Definition: When individuals benefit from a resource without paying for it. (2)
- Impact: Since street lighting is non-excludable, people won't pay for it voluntarily, meaning private firms cannot make a profit, leading to zero or insufficient supply. (2)

**15. Negative Externality in Production (4m)**
- Production creates external costs (e.g., pollution) not borne by the firm. (2)
- This means MSC > MPC; the firm over-produces the good relative to the social optimum, leading to an inefficient allocation of resources. (2)

**16. Indirect Taxes (8m)**
- Effectiveness: Increases the cost of production, shifting MPC upwards to internalize the externality. (3)
- Pros: Generates government revenue; reduces consumption of demerit goods. (2)
- Cons: Effectiveness depends on PED (if inelastic, consumption may not drop significantly); regressive nature may hurt low-income earners. (3)

**17. Government Subsidies (8m)**
- Effectiveness: Lowers the cost to consumers/producers, shifting MPC downwards or increasing demand. (3)
- Pros: Makes merit goods more affordable; encourages higher consumption toward the social optimum. (2)
- Cons: Opportunity cost for the government; risk of creating dependency or inefficiency in the private sector. (3)

**18. Legislation vs. Market-Based (8m)**
- Legislation: Direct bans or quotas. Pros: Certainty of outcome. Cons: High enforcement costs, inflexible. (4)
- Market-Based: Taxes/Subsidies. Pros: Uses price signals, generates revenue. Cons: Difficult to quantify the exact value of the externality. (4)

**19. Government Failure (4m)**
- Reason: Information failure (government lacks perfect data to set the correct tax/subsidy) or political pressure/lobbying. (2)
- Result: The intervention may lead to a net welfare loss greater than the original market failure. (2)

**20. Direct Provision of Healthcare (6m)**
- Argument for: Ensures equity of access regardless of income; eliminates the profit motive that might lead to under-provision of preventative care. (3)
- Evaluation: May lead to inefficiency (long waiting lists) due to lack of competition and the "tragedy of the commons" (over-use of free services). (3)