4.1.8 The market mechanism, market failure and government intervention in markets Flashcards
What is the purpose of price mechanism?
It determines the market price and allocates resources in a free market economy, solving the economic problem of scarce resources.
What functions does price mechanism use to allocate resource?
Rationing mechanism, incentive and signalling function
How does the rationing mechanism work?
When there are scarce resources, price increases due to the excess of demand, discouraging demand and consequently rationing resources.
How does incentive work?
- It encourages a change in behaviour of a consumer or producer
- For example, a high price encourages firms to supply more to the market, as it is more profitable to do so
How does signalling work?
- Price acts as a signal to consumers and new firms entering a market, and price changes show where resources are needed in the market
- For example, a high price signals firms to enter the market because it is profitable, shifting the demand and supply curves
What are the advantages of the price mechanism?
- Can signal what the cost of purchasing a good is to a consumer, and acts as a signal to producers to tell them what revenue they will receive
- Allows consumers to gain sovereignty in the market, as they have ‘spending votes’ in the market, enabling them to choose what is bought and sold
What are the disadvantages of the price mechanism?
- Not considering what the distribution of income is, as those with money have buying power over those that do not
- The price mechanism and free market ignore inequality, it can be argued that inequality exists, but the degree of inequality may vary between capitalistic societies
- In a free market there is under-provision of public and merit goods, requiring government intervention
When does market failure occur?
Whenever a market leads to a misallocation of resources, meaning they are not allocated to the best interests of society.
What are the consequences of market failure?
Economic and social welfare is not maximised, and the economic problem is not answered as resources are misallocated.
What are the causes of market failure?
- Externalities, as costs and benefits of consumption and production are not considered by the market, so quantity sold is not the social optimum
- Under-provision of public goods, as no profit being can be made from their provision, so the market does not supply it
- Monopolies restricting output, leading to under-consumption of a good or service
- Information gaps
- Inequalities in the distribution of income and wealth can lead to negative externalities such as social unrest
- Price instability, as inflation/deflation can deter investment leading to no growth
When does complete market failure occur?
When there is a missing market, so the market does not supply the products at all.
When does partial market failure occur?
When the market produces a good at the wrong quantity or price, leading to misallocation of resources.
What are public goods?
Goods and services missing from the free market, that offer benefits to society, such as flood defences and street lights.
What are the characteristics of public goods?
- Non-excludable, so by consuming the good, someone else is not prevented from consuming it as well, and people cannot be prevented from using it
- Non-rival, so the benefit other people get from the good does not diminish as more people consume the good
How does the free-rider problem occur?
Due to the non-excludable nature of public goods, people who do not pay for the good still receive benefits from it, in the same way people who pay for it do.
Why are public goods underprovided by the private sector?
- Due to the free-rider problem, they do not make a profit form providing the good since consumers do not see a reason to pay for the good if they still receive the benefit without paying
- It is difficult to measure the value consumers get from public goods, so it is hard to put a price on it
- Consumers will undervalue the benefit, so they can pay less, whilst the producers will overvalue, so they can charge more
How are public goods provided?
- By the government, by estimating what the social benefit of the public good is when deciding what output of it to provide
- Funded using tax revenue, but the quantity provided will be less than the social optimum quantity
What are private goods?
- Goods supplied by the free market, as they are profitable for producers to make and sell
- They are rival and excludable
What are quasi (non-pure) public goods?
Goods with the characteristics of both public and private goods, partially provided by the free market.
What is an example of a quasi public good?
Roads, as they are semi-excludable through tolls, and they are semi-non-rival because consumers can benefit from the road whilst other consumers are using it, unless it is rush hour.
Why is technological change significant in changing excludability?
- For example, the introduction of subscriptions can make television broadcasting excludable, as it is only available to those willing and able to pay for them
- However, data sharing can decrease excludability
What is the tragedy of the commons?
- Individuals prioritise personal gain over the well-being of society
- When resources are held in common, it means that no one owns the resource, but everyone can access it
- For example, no one owns the air, but everyone can use it, leading to the negative externality of air pollution, resulting in market failure from common access
What is an externality?
- A cost or benefit a third party receives from an economic transaction outside of the market mechanism
- The spill-over effect of the production or consumption of a good or service
What does the supply curve represent when considering externalities?
Marginal private cost (MPC)
What does the demand curve represent when considering externalities?
Marginal private benefit (MPB)
What causes positive externalities?
Merit goods, causing information failure as consumers do not realise the long run benefits of consuming it.
What causes negative externalities?
Demerit goods, causing information failure as consumers are not aware of the long run implications of consuming it.
Why is the extent to which a market fails normative?
It involves a value judgement, so it is hard to determine what the monetary value of an externality is, such as the cost of pollution to society.
What are private costs?
- Private costs of production producers are concerned with, such as any factors of production, determining how much the producer will supply
- Could refer to the market price which the consumer pays for the good
What are social costs?
The total of private costs and external costs.
How are external costs shown on a diagram?
- The vertical distance between the marginal private cost and social cost curves
- The difference between private costs and social costs
What is private benefit?
- The benefit derived from the consumption of a good for a consumer, determined by the price the consumer is prepared to pay
- Could also be a firm’s revenue from selling a good
What is social benefit?
The total of private benefits and external benefits.
How is external benefit represented on a diagram?
The difference between the marginal private and social benefit curves.
What is the social optimum position?
The quantity/price at which MSC = MSB, and is the point of maximum welfare.
Describe a diagram showing a positive consumption externality.
- Qe where MPC/MSC (S) meets MPB (D), social optimum quantity Q1 where MPC/MSC (S) meets MSB to right of MPB
- Shows that product is underconsumed, creating a loss of economic welfare, deadweight loss
Describe a diagram showing a negative consumption externality.
- Qe where MPC/MSC (S) meets MPB (D), social optimum quantity Q1 where MPC/MSC (S) meets MSB to left of MPB
- Shows that product is overconsumed, creating a loss of welfare, deadweight loss
Describe a diagram showing a positive production externality.
- Qe where MPC (S) meets MPB/MSB (D), social optimum quantity Q1 where MPB/MSB (S) meets MSC to right of MPC
- Shows that good is underproduced, creating a loss of economic welfare, deadweight loss
Describe a diagram showing a negative production externality.
- Qe where MPC (S) meets MPB/MSB (D), social optimum quantity Q1 where MPB/MSB (S) meets MSC to left of MPC
- Shows that good is overproduced, creating a loss of welfare, deadweight loss
How is deadweight loss found on an externality diagram?
Find the point of private equilibrium, go vertically up/down depending on the externality, to the social benefit/cost.
What are the characteristics of demerit goods?
- Asymmetric information, as consumers are unaware of consequences of consumption
- Poor individual decision making, such as short termism
- Negative externalities of consumption
What are the characteristics of merit goods?
- Asymmetric information, as firms withhold information for short term profits
- Poor individual decision making, such as short termism
- Positive externalities of consumption
What are examples of demerit goods and what are their negative externalities?
- Alcohol, consequences of harmful addiction on others
- Cigarettes, second-hand smoke
What are examples of merit goods and what are their positive externalities?
- Education, higher skilled workforce
- Healthcare, such as vaccines resulting in herd immunity, more productive workforce
What does symmetric information mean?
Consumers and producers have perfect market information to make their decision, leading to an efficient allocation of resources
What does asymmetric information mean?
There is unequal knowledge between consumers and producers, leading to a misallocation of resources, therefore market failure
What does imperfect information mean?
Information is missing, so an informed decision cannot be made
What are examples of asymmetric information?
- A car dealer might know about a fault with the car that the consumer is unaware of
- Insider trading, where buyers have more information than the public, as they are not aware of the true value of the stock
- Adverse selection, such as where customers usually buy insurance when they have a greater need for it
What is the mobility of factors of production?
The ability of workers to change between jobs
What provides evidence that labour markets do not work efficiently?
Unemployment
What are examples of factor of production immobility?
Geographical immobility and occupational immobility, causing structural unemployment and possibly frictional unemployment
What is geographical immobility of factors of production?
The obstacles which prevent the factors of production moving between areas, such as labour finding it hard to find work due to family and social ties, the financial costs of moving, imperfect market knowledge on work and the regional variations in house prices and living costs
What is occupational immobility of factors of production?
- The obstacles which prevent the factors of production changing their use, such as labour finding it difficult to change their occupation
- Occurred in the UK with the collapse of the mining industry, when workers did not have transferable skills to find other work
What are the causes of occupational immobility?
Insufficient education, training and skills, age and technological change
What is moral hazard?
The risks that someone becomes more inclined to take as they have a reason to believe that an insurer will cover the costs of any damage, leading to a higher need for payouts, increasing the price of premiums, or under provision of the service.
For example, banks after the global financial crisis were bailed out by government funds, so were encouraged to make more risky loans
How can monopolies and monopoly power lead to market failure?
Monopolies could exploit consumers by charging higher prices and underproducing as profit maximisers, leading to underconsumption of the product, causing a loss of allocative efficiency and therefore market failure.
However there can also be dynamic efficiency from supernormal profits, depending on how it is spent, and the market, such as a natural monopoly
What is the Competition and Market Authority (CMA)?
A department of the UK government aimed at strengthening business competition and reducing anti-competitive behaviour.