AQA AS Microeconomics: Key Terms

Key Terms For AQA A-S Level Microeconomics (unit 1). Definition Flashcards.
Created May 16, 2011
by mikebackhouse
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Side ASide B
Occupational Immobility
The lack of skill, knowledge and/or ability to perform a job. Often due to structural unemployment. 
Geographical Immobility
Difficulty moving/commuting to where employment opportunities are. EG family reasons,...
Income
A flow of earnings to a factor of production over a period of time.
Wealth
A stock of owned assets. EG housing property or a portfolio of shares.
Indirect tax
Taxes on spending.
Pollution permit
A permit sold to firms by the government allowing them to pollute up to a certain limit.
Law of Unintended Consequences 
When the actions of consumers, producers and/or governments have effects that are unanticipated. 
Inflation
A sustained rise in the general price level
Economies of scale
Where an increase in production leads to a lower Average Total Cost (ATC)
Diseconomies of scale
Where an increase in production leads to a higher Average Total Cost (ATC)
Competition
A market situation in which there are a large number of buyers and sellers. 
Monopoly
A market structure dominated by a single seller of a good or service.
Externalities
Cost/Benefits that spillover to an external third party, not involved in an economic transaction.
Marginal Private Cost (MPC)/Marginal Private Benefit (MPB)
The cost/benefit to an individual or firm of an economic transaction.
Marginal External Cost (MEC)/Marginal External Benefit (MEB) 
The cost/benefit spillover to a 3rd party not involved in the economic transaction
Marginal Social Cost (MSC)/Marginal Social Benefit (MSB)
The full cost/benefit to society.MSC = MPC + MECMSB = MPB + MEB 
Positive Externalities
Positive spillover effects to 3rd parties of an economic transaction. 
Ex ante
A term that refers to future events yet to come.
Ex post
A term that refers to occurances after an event
Merit Good
A good that would be under-consumed in a free market. All benefits to society are not fully perceived. 
Informational Failure
Where economics agents do not fully  perceive the pros and cons of an economics transaction.
Partial Market Failure
Where the free market provides a product but with mis-allocation of resources. 
Demerit Good
A good which would be over-consumed in a free market, as consumers don't fully understand the...
Public Good
Satisfies the Non-excludability and Non-rivalry conditions. (has complete market failure...
Quasi-Public Good
Has Some qualities of a public good, but does not fully satisfy the criteria. (has partial...
Private Good
Is excludable and has rivals in competition 
Complete Market Failure
The free market fails to provide a product/service at all (EG public goods)
Minimum/Maximum Price 
A method of intervention by the government to impose lawfully a floor/ceiling price.
Price Elasticity of Demand, Ped
The responsiveness of demand to a change in the price level.
Subsidies 
Payments made by the government to producers to encourage production of a good/service. 
Incidence of Tax
The proportion of tax that is passed onto the consumer. This will be high when there is inelastic...
Income elasticity of demand, Ied
The proportion to which demand changes in response to changes in income. 
Substitutes
Goods that can be used as alternatives to another good.
Commodity
A good that is traded, but usually refers to raw materials or semi-manufactured goods, often...
Investment good
A product that will increase in value over time.
Sustainable
An activity carried out today that does not stop future generations maximising their welfare.
Market failure
Where the market fails to produce what consumers require, at the lowest possible cost. 
Government failure 
When the government intervenes in a attempt to correct market failure, but worsens the situation;...
Buffer stocks
An intervention system that aims to limit the volatility/fluctuations of the price...
Inflationary pressures.
Occurances thatare likely to lead to increased price levels
Negative Externalities
Costs imposed on a third party, not involved in an economic transaction.
Production
The process that converts factors of production into outputs of goods and services.
Fixed costs
Costs of productions that do not vary as output changes, EG rent, new capital, salaries. 
Variable costs
Costs of production that vary with output 
Supply
The amount offered for sale at each given price level
Planned supply
The amount producers plan to produce at each given price level 
Actual supply
The amount actually produced (may be different from planned supply)
Market Supply
The sum of all firms supply in a market's supply at each given price level. 
Extension in supply
Increased supply due to rising market price
Contraction in supply
Decreased supply due to falling market price. 
Joint Supply
Production of one good results in the production of another  EG Crude Oil -->...
Equilibrium
Where demand equals supply and there is no tendency to change.
Disequilibrium 
Where demand does not equal supply (and therefore there is tendency for price/quantity changes). 
Excess Supply
Supply > Demand at a given price. Signals producers to lower prices. 
Market-clearing price
The (highest) price at which all goods that are supplied will be demanded.
Effective Demand
Demand supported by the ability to pay for a good or service
Market Demand
Total demand for a good in a market; the sum of individual's demand.
Contractions in demand.
Falls in quantity demanded caused by price rises.
Extensions in demand
Rises in quantity demanded caused by falls in price 
Normal Goods
Increase in demand when incomes rise
Inferior goods
Decrease in demand when incomes rise
Complimentary products 
Goods that are consumed together; EG Bread and Butter.
Composite Demand
Goods that are demanded for more than one purpose.
Derived Demand
When demand for one good/service comes from demand of another good/service; EG demand for tyres...
Productivity
A measure of efficiency. Labour productivity equals output per person per unit time (usually...
Human Capital
Skills, abilities, motivation and knowledge of labour.
Division of Labour
Breaking the production process down into a sequence of tasks with workers assigned to particular...
Specialisation
The production of a limited range of goods/services, which when assembled, produces a better...
Value Judgement
Non-falsifiable statements, often depending on the views of the individual 
Normative Statements
Opinions that require value judgments to be made.
Positive Statements 
Falsifiable statements, ie they can be tested against real-world data.
Demand
The amount that consumers are willing and able to buy at each given price level 
Economic Welfare
The benefit or satisfaction an individual or society gets from the allocation of...
Economic goods
Goods that are scarce in resource and therefore have an opportunity cost
Free Goods
Goods that do not have an opportunity cost
Factor Market
The markets of the factors of production (CELL - Capital, Enterprise, Land and Labour) 
Profit
Where a firm's total revenue > costs
Free market economy
Has very little government intervention, eg in equity issues such as protection from thievery....
PPB or PPC or PPF(Production Possibility Boundary/Curve/Frontier)
Indicates the max possible output at a fixed period of time (and technology, capital, etc)
Productive Efficiency
Firms operating at lowers ATC (average total cost), producing maximum outputs from given inputs 
Allocative Efficiency
Producing the right balance of goods and services which society values. i.e. you cannot make...


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