When a country's output of a product per unit of input is greater than that of any other country.
Absolute poverty
When a person does not have the income or wealth to fulfil their basic needs.
Aggregate Demand (AD)
The total demand/spending in an economy at a given price level over a given period of time. Made up of consumption, investment, government spending and net external demand.
Aggregate Supply (AS)
The total amount of goods and services that can be supplied in an economy at a given price level over a given period of time.
Aid
The transfer of resources from one country to another.
Allocative efficiency
Where the price of a good is equal to the price consumers are willing to pay. This occurs when all resources are allocated efficiently.
Asymmetric information
Where buyers have more information than sellers in a market, or vice versa.
Automatic stabilisers
Parts of fiscal policy that automatically react to changes in the economic cycle.
Average Cost (AC)
The cost of production per unit of output.
Average Revenue (AR)
The revenue per unit sold.
Backward vertical integration
Where a firm merges with or takes over a firm further back in the production process.
Balance of payments
A record of the international transactions of an economy.
Bank rate
The official rate of interest set by the central bank (e.g. by the Monetary Policy Committee of the Bank of England)
Barriers to entry
Potential difficulties that make it hard for firms to enter a market.
Barriers to exit
Potential difficulties that make it hard for firms to leave a market.
Black market
Economic activity that occurs without taxation and government intervention.
Budget deficit
When government spending exceeds tax revenues.
Budget surplus
When tax revenues exceed government spending.
Capital account of the balance of payments
A part of the balance of payments that shows transfers of non-monetary and fixed assets into and out of the economy.
Cartel
A group of products who collude to limit output in order to keep prices high.
Central bank
The institution responsible for issuing banknotes in an economy, acting as a lender of last resort, and implementing monetary policy.
Ceteris paribus
All other things remaining equal
Circular flow of income
The flow of national output, income and expenditure between firms and households.
Command economy
An economy where only the government determines the allocation of resources.
Comparative advantage
When the opportunity cost of producing a good or service is lower than that of any other country.
Competition policy
Government policy aimed at reducing monopoly power in order to increase efficiency and to ensure fairness for consumers.
Concentration ratio
A measure of the dominance of firms in a market.
Conglomerate integration
Where a firm merges with or takes over a firm in a completely different market.
Consumer surplus
The difference between the price a consumer pays and the price they were willing to pay.
Consumption
The purchase of goods and services.
Contestability
The degree to which new entrants find it easy to enter the market.
Cost-push inflation
Inflation caused by rising costs of production.
Cross elasticity of demand (XED)
A measure of the responsiveness of demand of one good/service to a change in price of another good/service.
Current account of the balance of payments
A part of the balance of payments that consists of: trade in goods, trade in services, primary income and secondary income.
Cyclical unemployment
Unemployment caused by a lack of demand in the economy.
Deflation
The sustained fall in the average price of goods and services in an economy over a period of time.
Demand-pull inflation
Inflation caused by increased demand in the economy.
Demand-side policy
Government policy that aims to alter aggregate demand in the economy.
Demerger
Where a firm sells of a part/parts of its business to create separate firms.
Deregulation
Removing government legislation that could restrict competition.