Definitions - Vital Flashcards
Economic activity
The process of combining resources to add value and produce goods and services demanded by consumers
The economic problem
Unlimited wants but only limited resources to match these, leading to scarcity and the need to make choices about what is produced, how it is produced and for whom.
Specialisation
The concentration of a worker, firm, region or country on a narrow range of goods and services.
Opportunity cost
The value of the next best alternative which foregone when a decision is made.
Production possibility curve
Shows the maximum output combinations of two goods or services that am economy can produce with all resources fully utilised.
Demand
The quantity of a good or service that consumers are willing and able to to buy at a given market price over a specified period of time.
Consumer surplus
The extra amount that consumers are willing to pay above the market price actually paid.
Supply
The quantity of a good or service that producers are willing and able to supply at a given market price over a specified period of time.
Producer surplus
The difference between the price a producer is willing to accept and the market price actually paid.
Market equilibrium
Occurs where demand equals supply and the market clears (I.e there is no shortage or surplus)
Price elasticity of demand (PED)
The responsiveness of the quantity demanded of a product relative to a change in price.
Cross elasticity of demand (XED)
The responsiveness of demand for one product relative to a change in the price of another product.
Income elasticity of demand (YED)
The responsiveness of demand to a change in consumers disposable income.
Price elasticity in supply (PES)
The responsiveness of the quantity supplied relative to a change in price of a good or service.
Allocative efficiency
Is achieved where supply equals demand and consumer satisfaction is maximised.
Market failure
Occurs when a market fails to achieve allocative efficiency. Is evident when the market equilibrium in a market differs from the social optimum.
Externalities
Spillover effects on third parties arising from production or consumption
Information failure
Occurs when a lack of information causes consumers and/or producers to make decisions that don’t maximise their own welfare
Merit good
A good that is better for consumers than they actually realise
Demerit good
A good that is worse for consumers than they actually realise.
Public good
A good that is both non rival and non-excludable in consumption
Non- excludability
A consumer cannot be prevented from consuming the good
Non - rivalry
Means that one consumer’s consumption does not reduce the amount available for consumption by others.
Quasi-public good
A good or service that has one of the characteristics of a public good but not both of them.