Market Mechanism, Market Failure, Gov intervention Flashcards
The Price Mechanism
- the rationing function
- the signalling function
- the incentive function
- the allocative function
The RAtioning FUnction
- as prices rise, removes excess demand, only consumers with ability to pay can purchase goods
The Signalling Function
-prices provide important information to market participants i.e increase or decrease production
The Incentive function
increased prices strengthen incentive for firms to produce more
The Allocative function
the function of prices that acts to divert resources to where returns can be maximised
Market failure
when the free market leads to a misallocation of resources in an economy
complete market failure
ie missing market
when free market fails to create market for particular goods and services
public goods
goods that are non rival and non excludable in consumption
non excludable
can’t prevent non paying consumers from consumin
non rival
one persons enjoyment of a good does not diminish anothers enjoyment
the free rider problem
individual consumers hope to get a ‘free ride’ without paying for the benefit they enjoy
- public goods = complete market failure- free markets no incentive to provide
private goods
a good that is rival and excludable in consumption
quasi- public goods
a good that exhibits not all but some characteristics of a public good
externalities
third party affects arising from the consumption and production of goods and services
MSC
Marginal private costs + marginal external costs
MSB
marginal private benefit + marginal external benefit
when is social welfare optimises
when MSB = MSC
Positive Externalities in Production
1) MPC > MSC therefore negative marginal external costs
2) free market equilibrium: MPB = MPC
3) socially optimal equilibrium: MSB = MSC
4) welfare gain to society as MSB > MSC at fm eq as FM doesn’t account for external benefits
5) underproduction
Positive Externalities in Consumption
1) MSB > MPB therefore marginal external benefit
2) free market equilibirum: MPB = MPC
3) socially optimal equilibrium: MSB = MSC
4) welfare gain to society as MSB > MSC at fm eq as fm doesnt account for external benefits
5) underconsumption
Negative Externalities in Production
1) MSC > MPC therefore marginal external cost
2) Free market equilibrium: MPB = MPC
3) socially optimal equilibrium: MSC = MSB
4) welfare loss to society as MSC > MSB at fm eq as fm doesnt account for external costs
5) overproduction
Negative Externalities in Consumption
1) MPB > MSB therefore negative marginal external benefit
2) Free market equilbrium: MPB = MPC
3) socially optimal equilibirum: MSC > MSB at fm eq as fm doesnt account for external costs
4) overconsumption
tragedy of the commons
the overuse of natural resources such as oceans, forests or atmospheres
- can be analysed using negative externality diagrams
merit goods
a good that would be underconsumed in a free market
Why are merit goods under consumed?
1) Information failure- people unaware of the potential private benefits from consuming merit goods in the long run
2) expensive
3) society may not take into account the wider benefits to society of their use of merit goods