THEME 1, Market failure (1.3) Flashcards
What is marginal private benefit? MPB
- The benefit from an additional unit of a good or service that the consumer of that good or service receives.
What is marginal private cost? MPC
- The cost of producing an additional unit of a good or service that is borne by the producer of that good or service
What is market failure?
- Failure to allocate scarce resources in the best or optimum way
- NET WELFARE LOSS
What is complete market failure?
- When a market fails to supply any of a good which is demanded, creating a missing market
What is a negative externality?
- The imposing of a cost on a party as a negative indirect effect of the actions of another party.
What is a positive externality?
- A benefit received or transferred to a party as an indirect effect of the transactions of another party.
What always happens in a market with a negative externality?
- Supply exceeds demand
- Too much is produced.
Define the term external benefits.
When the social benefit of an economic action is greater than the private benefit
How are external benefits calculated?
External benefits = Social benefits - Private benefits
How can externalities cause market failure?
- If the price mechanism does not account for the social costs and benefits of production and consumption
What are negative externalities caused by?
- Demerit goods
- Usually over provided
- For example, cigarettes and alcohol are demerit goods.
What are positive externalities caused by?
- Merit goods
- Usually under provided in a free market
- For example, education and healthcare
How are social costs calculated?
- Private costs + external costs
How are external costs shown on a diagram?
- The vertical distance between the two
curves. - Between private costs and social costs
How are external benefits shown on a diagram?
- The difference between private and social benefits.
- The vertical distance between the two
curves.
Where is the social optimum position?
- MSC = MSB
What is the social optimum position?
- The point of maximum welfare.
Where is the welfare loss found on an external costs of production diagram?
- The output where social costs > private benefits
Where is the welfare gain found on an external benefits of production diagram?
- The output where social benefits > private costs
What are government policies to reduce negative externalities?
- Indirect taxes to increase the cost of demerit goods
- Subsidies to encourage the consumption of merit goods.
- Regulation to enforce less consumption of a good. For example, the minimum school leaving age.
- Provide the good directly
- Personal carbon allowances
- Minimum set prices
When is the ban of a good useful (ONLY?
- Bans are only useful where MSC > MPB
- (the MSC curve is above MPB)
Are externalities in market transactions?
No
Where is market equilibrium on an externalities diagram?
- MPB = MSC
Definition of external benefits
- Positive third party effects
- The difference between private and social benefits.