Topic 2 - Market Failure Flashcards
How does market failure occur?
when the price mechanism fails to efficiently allocate the scarce resources to where they are best suited
What is misallocation of resources?
Resources are misallocated when they are not devoted to the use that will give society the most welfare
What is complete market failure ?
unless the good or service is provided outside the mechanism, there wouldn’t be a market for it.
E.g a country’s military services.
What is partial market failure ?
when the private sector may partially provide it but at the wrong price or quantity.
E.g private healthcare vs NHS
What are externalities?
When goods affect third parties (not the producer or the consumer) when produced or consumed
Why is Producing and consuming at the wrong price and quantity is bad for society
because resources could be better used to improve welfare
How can benefits and costs of a good be be separated?
the private and external benefits and private and external costs
Private benefits are observed and accounted for by the market.
But, because of asymmetry of information, the external consequences of a good are often ignored.
What is this a source of and why ?
This is a source of market failure
So we see over/underconsumption/production of some goods in the free market.
What are social benefits ?
The the sum of the external and private benefits
Where is the socially optimal point ?
The socially optimal quantity is where it is allocatively efficient to produce and consume.
This is a different quantity to what is often observed in the free market
What is the difference between the social benefit and private benefit ?
The external benefit
If the social and private curves are parallel, what does this mean for the external benefit .
the external benefit is constant.
If the private benefit and social benefit diverge, what’s mean for the external benefit?
the external benefit becomes greater as output is increased.
What are the causes of market failure ?
Externalities
A lack of public goods
Information gaps
What term refers to the total gain by society when a good is consumed?
Social benefit
What are externalities?
Externalities are the effects that producing or consuming goods have on other third parties or society as a whole
Why do externalities lead to market failure ?
Buyers or producers do not consider externalities when making decisions. This can lead to market failure because goods or services can be under or over consumed.
What is a positive consumption externality ?
This is a ‘good’ externality created in the consumption of a good.
The marginal social benefit is the total benefit of consuming a good or service to society. MSB = MPB + Externality.
If the consumption externality is positive, then the marginal social benefit is more than the marginal private benefit.
Consumers do not account for the benefit of the externality and this good will be under-consumed.
E.g. school education is a positive consumption externality because students become more productive for employers
What is a negative consumption externality ?
This is a ‘bad’ externality created in the consumption of goods/services (e.g cigarettes).
The marginal social benefit is the total benefit of consuming a good or service to society. It is equal to the marginal private benefit plus the value of the consumption externality.
If the consumption externality is negative, then the marginal social benefit is less than the marginal private benefit and the good will be overconsumed (vs the socially optimal level).
What are positive production externalities ?
These are externalities incurred when producing a good or service.
Marginal social cost = Marginal private cost - Production externality. MSC is the total cost of producing a good or service to society.
If the production externality is positive, then the social cost is less than the private cost and the good will be underproduced.
What are negative production externalities?
These are externalities created when producing a good or service.
If the production externality is negative, then the social cost is greater than the private cost and the good will be overproduced (vs the socially optimal level).
E.g a factory producing noise and air pollution is likely to have a social cost larger than the private cost.
How are externalities created ?
through an asymmetry of costs or benefits
What are private coats ?
Private cost:
The cost to an individual in the market
What are external costs ?
External cost:
A cost put on a third party due to a negative externality.
What are social costs ?
Social cost:
The cost to society due to a negative externality.
Social cost = private cost + external cost.
What are private benefits ?
Private benefit:
The benefit to an individual in the market
What are external benefits ?
External benefit:
The benefit a third party receives due to a positive externality.
What are social benefits ?
Social benefit:
The benefit to society due to a positive externality.
Social benefit = private benefit + external benefit.
How was Cristiano Ronald an externality when he joined Juventus ?
Cristiano Ronaldo joined Juventus from Real Madrid in Summer 2018. He cost Juventus 112 million euros (private cost). But the benefit of him joining Juventus spilled over to other people. The MSB > MPB.
Chievo Verona, only sell enough tickets to sell their stadium for 1 game per year. However, in 2018, their first match against Juventus sold out at the start of the season (external benefit).
Some estimates suggest that the value of the TV rights for Serie A, the Italian football league, have risen 20-30% (external benefit).
KPMG predicted that the deal would be worth 340 million euros to Juventus over the 4-year period of Ronaldo’s contract.
They may attract more sponsors, more social media followers and sell more Juventus shirts because of the deal (private benefit).
How is there a deadweight welfare loss in a negative production externality ?
Firms will only account for the MPC when producing goods and consumers will only account for the MPB when consuming.
The shaded triangle shows the deadweight welfare loss to society from the overproduction of something that has a negative production externality.
A government may want to reduce consumption to the socially optimal level of Qe.
What is the term given for the loss in utility due to externalities ?
A deadweight welfare loss.
What will firms account for when deciding production?
Marginal private costs (MPC)
What’s are examples of externalities?
Education (positive consumption)
Petrol cars (negative consumption)
Renewable energy (positive production)
Alcohol (negative consumption)
Vaccination (positive consumption)
How is education a positive consumption externality ?
A good with positive consumption externalities is often called a merit good.
Education has a positive consumption externality, so it is a merit good.
In education the MSB>MPB, so it is under consumed in the free market below the socially optimal level.
How are petrol cars a negative consumption externality?
Petrol cars have negative consumption externalities. This means that they are demerit goods.
Demerit goods are over consumed in the free market. This leads to a deadweight welfare loss to society
How is renewable energy a positive production externality ?
Renewable energy has positive production externalities.
It can replace the use of fossil fuels which can damage the environment - the opportunity cost would be using something negative instead of something neutral.
Governments have subsidised renewable energy (like wind and solar power) in the US and UK to try to increase production closer to the socially optimal level and deliver a gain in society’s welfare.
How is alcohol a negative consumption externality?
Alcohol has a negative consumption externality.
Excessive alcohol consumption is linked to crime and antisocial behaviour which the rest of society has to deal with. The consumer doesn’t pay the cost that the externality causes leading to the overconsumption of the negative consumption externality.
The MSB < MPB and this creates a welfare loss unless the government intervenes.
How is vaccination a positive consumption externality?
Vaccination has positive consumption externalities.
In addition to protecting someone from an illness, vaccination also reduces the risk of that person spreading the illness. As a result, the rest of society is better protected from the illness due to one person’s consumption of the vaccine. This is called herd immunity.
Why is absence of property rights an issue that leads to externalities?
The absence of property rights means that it is not clear who owns what.
For example, it is not clear who owns the environment or air. This can lead firms to pollute more than is optimal because they do not account for external costs.
Ronald Coase found that allocating property rights is one way to stop market failures from happening. This is called Coase Theorem.
The absence of property rights can lead to market failure.
What are the positive externalities of higher education?
Social cohesion & cultural values
Crime reduction
Economic growth
What is social cohesion & cultural values (as a positive externality) due to education ?
Everyone in a society learning to get along with one another, mixing at school and having a shared knowledge base should have a positive impact on cohesion in a society.
What is crime reduction (as a positive externality) due to education ?
Crime reduces other people’s welfare.
Moretti’s (2001) research found that people with higher levels of education were more likely to vote and less likely to be involved in crime.
What is economic growth (as a positive externality) due to education ?
Economic growth involves using the same inputs to create more or higher quality outputs. This should benefit everyone. In the UK, someone with a median income probably lives better than the Queen 100 years ago.
Krueger & Lindahl (2001) find that people receiving better education is associated with faster economic growth.
Barro & Sala-i-Martin (1995) completed statistical analysis that found that a 1% rise in spending on education as a % of GDP led to a 0.15% increase in economic growth.
What is the negative externality in education ?
The signalling hypothesis
The signalling hypothesis outlined by Spence (1974) argues that education could be a signal.
If an employer cannot observe a person’s ability or intelligence, they instead observe their education as a signal.
Harmon et al (2004) found ‘little’ support for the signalling hypothesis. However, if the signalling hypothesis were true everyone would be forced to get an education, even if it didn’t add that much value.
In the signalling hypothesis of education, why do people get education ?
Because other people have education not having it is a bad signal
Because employers can’t observe talent or intelligence
What are public goods ?
Public goods are not provided by the free market and government intervention is needed to change this missing market.