Source: https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-5-oligopolies [Revision notes](https://senecalearning.com/en-gb/revision-notes.md) › [A Level](https://senecalearning.com/en-gb/revision-notes/a-level.md) › [Economics](https://senecalearning.com/en-gb/revision-notes/a-level/economics.md) › [Edexcel](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel.md) › Oligopolies # Oligopolies Economics: Edexcel A A Level, topic 6.1.5 ## Oligopoly An oligopoly is an industry which is dominated by a few firms. ### Characteristics of oligopoly ![Characteristics of oligopoly](https://image-v2.cdn.app.senecalearning.com/2018-08/9bd98d3e-ebdd-4b51-b012-edc04c2bcadd/Oligopoly-.jpg) - A few firms with a high concentration ratio and significant price-setting power. - Supernormal profit in the short-run and long-run. - Barriers to entry are relatively high. - Product differentiation. - Interdependence between firms. But they can often implement collusive strategies. - Oligopoly can be defined through either its conduct (collusive or competitive), or its structure. ### Concentration ratios ![Concentration ratios](https://image-v2.cdn.app.senecalearning.com/2018-08/2b03d257-21a4-4dc4-ba18-868f9d71eaeb/76%25-%25-.jpg) - Concentration ratios measure the power of the firms in an oligopoly. - If there are four firms in an oligopoly that take up 76% of the market, then the four-firm concentration ratio is 76%. - The n-firm concentration ratio is a measure of market structure. It combines the market share of the top n firms as a % of the total market. - E.g If the top 3 firms control 80% of a market, the 3-firm concentration ratio is 0.8. ### Collusive oligopoly ![Collusive oligopoly](https://image-v2.cdn.app.senecalearning.com/2018-08/a736c88f-5bda-4a64-971b-8fa4a38de5f2/Collaberating-teamwork-.jpg) - Firms in an oligopoly are interdependent. Their pricing and product strategies depend on the behaviour of the other firms. - The prisoners' dilemma shows us that firms can receive a greater payoff by colluding. - Firms can agree to raise prices. - Formal collusion: a spoken agreement between firms to keep prices high. - Tacit collusion: an unspoken agreement between firms. Tacit collusion often works through price leadership. Here, it is in both firms best interest not to change prices. ### Non-collusive oligopoly ![Non-collusive oligopoly](https://image-v2.cdn.app.senecalearning.com/2018-08/c12310c4-dd93-4e40-84b0-642e13bd1b76/competition-boxing-buusiness-man-.jpg) - In a non-collusive oligopoly, firms compete with each other on a number of factors, including price. - Non-collusive oligopolies are a common type of market structure. ### Likelihood of types of oligopoly ![Likelihood of types of oligopoly](https://image-v2.cdn.app.senecalearning.com/2018-08/2d70139b-877b-451f-9c9e-9d5d3c395baf/beijing-.jpg) - Non-collusive oligopolies are more likely when we see: - Low entry barriers, a high number of firms, and different marginal costs. - Collusive oligopolies are more likely when we see: - High entry barriers, low number of firms, and similar marginal costs. ## Features of an Oligopoly The nature of the oligopoly can have an impact on the firms within it, as well as the consumers. ### Price wars ![Price wars](https://image-v2.cdn.app.senecalearning.com/2018-08/928aabb3-ccad-4fb7-a0a6-6bd70e3908ad/price-war-.jpg) - Firms in an oligopoly may engage in a price war. - By fiercely cutting prices (sometimes called 'predatory pricing'), firms are trying to gain market share. - The idea is that by aggressively cutting prices, you will drive other firms out of the market because they can no longer compete. - New firms will be discouraged to enter because of the low profits being made. - Once firms have been driven out of the market, non-price competition can be used to maintain market share. ### Advantages of oligopoly ![Advantages of oligopoly](https://image-v2.cdn.app.senecalearning.com/2018-08/a736c88f-5bda-4a64-971b-8fa4a38de5f2/Collaberating-teamwork-.jpg) - Informal collusion is less likely than it may appear, as one firm tends to defect, which brings down the entire cartel. - This could lead to price wars, which are good for consumers due to the lower prices. - Collusive oligopolies can achieve dynamic efficiency through non-price competition and product development. - Competitive oligopolies also have the potential to be very efficient. ## Examples of Oligopolies Due to their size and the fact that they often spend large amount on advertising, many firms and oligopoly industries are well-known: ### Coca-Cola and Pepsi ![Coca-Cola and Pepsi](https://image-v2.cdn.app.senecalearning.com/2018-07/ee9e5595-4ed6-4cef-8065-a1e3c5589151/FIFA-World-Cup-Trophy-Tour-by-Coca-Cola-photo-3.jpg) - Technically, a market with two dominant sellers is called a duopoly. - However, the interdependence and behaviour of these firms would be the same with three or more sellers and so Coca-Cola and Pepsi could be considered here. - They have such strong brands that barriers to entry are very high and they also have strong price-setting power. - Coca-Cola and Pepsi are also very dependent on each other in terms of their price and promotion levels. ### 'Big Six' energy companies !['Big Six' energy companies](https://image-v2.cdn.app.senecalearning.com/2018-03/72adc43a-c75f-4549-a10c-b47762041c8f/shutterstock_288363359.jpg) - Although this has since reduced, the 'Big Six' UK energy providers controlled virtually all of the gas and electricity markets. - They have been accused of price fixing by politicians and made such large profits that there were calls for a special, one-off tax on these. - The CMA has investigated this industry recently and it is under constant scrutiny. - There are high barriers to entry and brand loyalty, mainly due to customers not switching to cheaper suppliers when this is possible. ### Mobile phone networks ![Mobile phone networks](https://image-v2.cdn.app.senecalearning.com/courseImages/physics/AQA%20New%20Modules/1.7.1/driving%20mobile%20phone.jpg) - There are several main mobile phone service providers in the UK, including Vodafone, EE, O2, etc. - There are high barriers to entry due to the need to have a licence to operate and these firms spend heavily on marketing and promotions to gain customers. - BT bought EE for £12.5bn after the CMA approved the deal, deciding that it would not cause there to be a substantial reduction in the level of competition. ## Test yourself on Oligopolies - Which word best sums up the relationship between firms in an oligopoly? - How does collusion relate to oligopoly industries? - Which of these is NOT a factor affecting whether an industry becomes an oligopoly? - If the top 10 firms in an industry control 90% of the sales, what is the 10-firm concentration ratio? - How might an oligopoly benefit consumers? [Practise this topic for free](https://app.senecalearning.com/classroom/course/d903555c-0201-4e4b-b4f4-8a5ad1345c9e/section/ab4e842c-0b78-4288-a75f-a206c4f06c4e/session) - Previous topic: [6.1.4 Monopolistic Competition](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-4-monopolistic-competition.md) - Next topic: [6.1.6 The Prisoner's Dilemma](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-6-the-prisoners-dilemma.md) ## Economics: Edexcel A A Level contents ### 1 Introduction to Markets - 1.1 Nature of Economics - [1.1.1 Economics as a Social Science](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-1-1-economics-as-a-social-science.md) - [1.1.2 Positive & Normative Economic Statements](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-1-2-positive-and-normative-economic-statements.md) - [1.1.3 The Economic Problem](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-1-3-the-economic-problem.md) - [1.1.4 Resources](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-1-4-resources.md) - [1.1.5 Production Possibility Frontiers](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-1-5-production-possibility-frontiers.md) - [1.1.6 Specialisation & Division of Labour](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-1-6-specialisation-and-division-of-labour.md) - [1.1.7 Types of Economies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-1-7-types-of-economies.md) - [1.1.8 End of Topic Test - Nature of Economics](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-1-8-end-of-topic-test-nature-of-economics.md) - [1.1.9 Application Questions - Nature of Economics](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-1-9-application-questions-nature-of-economics.md) - 1.2 How Markets Work - [1.2.1 Rational Decision Making](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-1-rational-decision-making.md) - [1.2.2 Demand](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-2-demand.md) - [1.2.3 Elasticities of Demand](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-3-elasticities-of-demand.md) - [1.2.4 Elasticities of Demand 2](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-4-elasticities-of-demand-2.md) - [1.2.5 Elasticity & Revenue](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-5-elasticity-and-revenue.md) - [1.2.6 Supply](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-6-supply.md) - [1.2.7 Elasticity of Supply](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-7-elasticity-of-supply.md) - [1.2.8 Price Determination](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-8-price-determination.md) - [1.2.9 Price Mechanism](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-9-price-mechanism.md) - [1.2.10 Consumer & Producer Surplus](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-10-consumer-and-producer-surplus.md) - [1.2.11 Indirect Taxes & Subsidies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-11-indirect-taxes-and-subsidies.md) - [1.2.12 A-A* (AO3/4) - Taxing Prices or Quantities?](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-12-a-a-ao34-taxing-prices-or-quantities.md) - [1.2.13 Alternative View of Consumer Behaviour](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-13-alternative-view-of-consumer-behaviour.md) - [1.2.14 End of Topic Test - Markets](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-14-end-of-topic-test-markets.md) - [1.2.15 A-A* (AO3/4) - Markets](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/1-2-15-a-a-ao34-markets.md) ### 2 Market Failure - 2.1 Market Failure - [2.1.1 Types of Market Failure](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-1-1-types-of-market-failure.md) - [2.1.2 Externalities](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-1-2-externalities.md) - [2.1.3 The Deadweight Welfare Loss of Externalities](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-1-3-the-deadweight-welfare-loss-of-externalities.md) - [2.1.4 A-A* (AO3/4) - The Externalities of Education](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-1-4-a-a-ao34-the-externalities-of-education.md) - [2.1.5 Public Goods](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-1-5-public-goods.md) - [2.1.6 Information Gaps](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-1-6-information-gaps.md) - [2.1.7 End of Topic Test - Market Failure](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-1-7-end-of-topic-test-market-failure.md) - [2.1.8 Application Questions - Market Failure](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-1-8-application-questions-market-failure.md) - 2.2 Government Intervention - [2.2.1 Government Intervention in Markets](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-2-1-government-intervention-in-markets.md) - [2.2.2 Subsidies & Price Controls](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-2-2-subsidies-and-price-controls.md) - [2.2.3 Pollution Permits & Regulation](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-2-3-pollution-permits-and-regulation.md) - [2.2.4 A-A* (AO3/4) - European Emissions Trading](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-2-4-a-a-ao34-european-emissions-trading.md) - [2.2.5 State Provision & Information Provision](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-2-5-state-provision-and-information-provision.md) - [2.2.6 Government Failure](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-2-6-government-failure.md) - [2.2.7 End of Topic Test - Government Intervention](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-2-7-end-of-topic-test-government-intervention.md) - [2.2.8 A-A* (AO3/4) - Government Intervention](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/2-2-8-a-a-ao34-government-intervention.md) ### 3 The UK Macroeconomy - 3.1 Measures of Economic Performance - [3.1.1 Measuring Economic Growth](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-1-measuring-economic-growth.md) - [3.1.2 National Income Data](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-2-national-income-data.md) - [3.1.3 Inflation](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-3-inflation.md) - [3.1.4 Causes of Inflation](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-4-causes-of-inflation.md) - [3.1.5 Consequences of Inflation](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-5-consequences-of-inflation.md) - [3.1.6 Employment & Unemployment](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-6-employment-and-unemployment.md) - [3.1.7 Causes & Impact of Unemployment](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-7-causes-and-impact-of-unemployment.md) - [3.1.8 A-A* (AO3/4) - Hysteresis](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-8-a-a-ao34-hysteresis.md) - [3.1.9 Balance of Payments](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-9-balance-of-payments.md) - [3.1.10 Current Account Deficit & Imbalances](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-10-current-account-deficit-and-imbalances.md) - [3.1.11 End of Topic Test - Economic Performance](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-11-end-of-topic-test-economic-performance.md) - [3.1.12 Application Questions Macroeconomy](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-1-12-application-questions-macroeconomy.md) - 3.2 Aggregate Demand - [3.2.1 Aggregate Demand](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-2-1-aggregate-demand.md) - [3.2.2 Consumption](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-2-2-consumption.md) - [3.2.3 Investment](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-2-3-investment.md) - [3.2.4 Government Expenditure](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-2-4-government-expenditure.md) - [3.2.5 Net Trade](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-2-5-net-trade.md) - [3.2.6 End of Topic Test - Aggregated Demand](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-2-6-end-of-topic-test-aggregated-demand.md) - [3.2.7 Application Questions - AD](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-2-7-application-questions-ad.md) - 3.3 Aggregate Supply - [3.3.1 Aggregate Supply](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-3-1-aggregate-supply.md) - [3.3.2 End of Topic Test - Aggregated Supply](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-3-2-end-of-topic-test-aggregated-supply.md) - [3.3.3 A-A* (AO3/4) -Aggregate Supply](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-3-3-a-a-ao34-aggregate-supply.md) - 3.4 National Income - [3.4.1 National Income](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-4-1-national-income.md) - [3.4.2 Injections & Withdrawals](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-4-2-injections-and-withdrawals.md) - [3.4.3 Equilibrium Level of Real National Output](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-4-3-equilibrium-level-of-real-national-output.md) - [3.4.4 Multiplier Effect](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-4-4-multiplier-effect.md) - [3.4.5 End of Topic Test - National Income](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-4-5-end-of-topic-test-national-income.md) - [3.4.6 Application Questions - National Income](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-4-6-application-questions-national-income.md) - 3.5 Economic Growth - [3.5.1 Causes of Economic Growth](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-5-1-causes-of-economic-growth.md) - [3.5.2 Output Gaps](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-5-2-output-gaps.md) - [3.5.3 Business Cycle](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-5-3-business-cycle.md) - [3.5.4 Impact of Economic Growth](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-5-4-impact-of-economic-growth.md) - [3.5.5 End of Topic Test - Economic Growth](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-5-5-end-of-topic-test-economic-growth.md) - [3.5.6 A-A* (AO3/4) - Growth](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/3-5-6-a-a-ao34-growth.md) ### 4 The UK Economy - Policies - 4.1 Macroeconomic Objectives & Policies - [4.1.1 Possible Objectives](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-1-possible-objectives.md) - [4.1.2 Demand-Side Policies - Monetary](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-2-demand-side-policies-monetary.md) - [4.1.3 Demand-Side Policies - Monetary 2](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-3-demand-side-policies-monetary-2.md) - [4.1.4 A-A* (AO3/4) - The Future of Interest Rates](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-4-a-a-ao34-the-future-of-interest-rates.md) - [4.1.5 Demand-Side Policies - Fiscal](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-5-demand-side-policies-fiscal.md) - [4.1.6 Demand-Side Policies in 2007-08](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-6-demand-side-policies-in-2007-08.md) - [4.1.7 Strengths & Weaknesses of Demand Side](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-7-strengths-and-weaknesses-of-demand-side.md) - [4.1.8 Supply-Side Policies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-8-supply-side-policies.md) - [4.1.9 Supply-Side Policies 2](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-9-supply-side-policies-2.md) - [4.1.10 Conflicts Between Objectives](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-10-conflicts-between-objectives.md) - [4.1.11 A-A* (AO3/4) - Conflicting Incentives](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-11-a-a-ao34-conflicting-incentives.md) - [4.1.12 Phillips Curve](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-12-phillips-curve.md) - [4.1.13 End of Topic Topic - Policies & Objectives](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-13-end-of-topic-topic-policies-and-objectives.md) - [4.1.14 Application Questions - UK Policies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/4-1-14-application-questions-uk-policies.md) ### 5 Business Behaviour - 5.1 Business Growth - [5.1.1 Size & Types of Firms](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-1-1-size-and-types-of-firms.md) - [5.1.2 Business Growth](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-1-2-business-growth.md) - [5.1.3 Pros & Cons of External Expansion](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-1-3-pros-and-cons-of-external-expansion.md) - [5.1.4 Demergers](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-1-4-demergers.md) - [5.1.5 End of Topic Test - Business Growth](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-1-5-end-of-topic-test-business-growth.md) - [5.1.6 A-A* (AO3/4) - Business Growth](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-1-6-a-a-ao34-business-growth.md) - 5.2 Business Objectives - [5.2.1 Business Objectives](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-2-1-business-objectives.md) - [5.2.2 End of Topic Test - Business Objectives](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-2-2-end-of-topic-test-business-objectives.md) - [5.2.3 Application Questions - Business Objectives](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-2-3-application-questions-business-objectives.md) - 5.3 Revenues, Costs & Profits - [5.3.1 Revenue](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-3-1-revenue.md) - [5.3.2 Costs](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-3-2-costs.md) - [5.3.3 Economies & Diseconomies of Scale](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-3-3-economies-and-diseconomies-of-scale.md) - [5.3.4 Profits](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-3-4-profits.md) - [5.3.5 Profits 2](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-3-5-profits-2.md) - [5.3.6 End of Topic Test - Revenue, Costs & Profits](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-3-6-end-of-topic-test-revenue-costs-and-profits.md) - [5.3.7 A-A* (AO3/4) - Revenue, Costs & Profit](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/5-3-7-a-a-ao34-revenue-costs-and-profit.md) ### 6 Market Structures - 6.1 Market Structures - [6.1.1 Efficiency](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-1-efficiency.md) - [6.1.2 Perfect Competition](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-2-perfect-competition.md) - [6.1.3 Perfect Competition 2](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-3-perfect-competition-2.md) - [6.1.4 Monopolistic Competition](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-4-monopolistic-competition.md) - [6.1.5 Oligopolies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-5-oligopolies.md) - [6.1.6 The Prisoner's Dilemma](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-6-the-prisoners-dilemma.md) - [6.1.7 Collusion in Oligopolistic Markets](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-7-collusion-in-oligopolistic-markets.md) - [6.1.8 A-A* (AO3/4) - Which Factors Affect Collusion?](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-8-a-a-ao34-which-factors-affect-collusion.md) - [6.1.9 Monopolies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-9-monopolies.md) - [6.1.10 Price Discrimination](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-10-price-discrimination.md) - [6.1.11 Monopsony](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-11-monopsony.md) - [6.1.12 A-A* (AO3/4) - Models in Economics](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-12-a-a-ao34-models-in-economics.md) - [6.1.13 Contestability](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-13-contestability.md) - [6.1.14 Benefits of Contestability](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-14-benefits-of-contestability.md) - [6.1.15 End of Topic Test - Market Structures](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-15-end-of-topic-test-market-structures.md) - [6.1.16 Application Questions - Market Structures](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-16-application-questions-market-structures.md) - [6.1.17 A-A* (AO3/4) - Cereal Collusion](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-1-17-a-a-ao34-cereal-collusion.md) - 6.2 Labour Market - [6.2.1 Demand for Labour](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-2-1-demand-for-labour.md) - [6.2.2 Supply of Labour](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-2-2-supply-of-labour.md) - [6.2.3 Labour Market Imperfections](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-2-3-labour-market-imperfections.md) - [6.2.4 A-A* (AO3/4) - Labour Productivity & Unemployment](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-2-4-a-a-ao34-labour-productivity-and-unemployment.md) - [6.2.5 A-A* (AO3/4) - What Level of Unionisation is Good?](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-2-5-a-a-ao34-what-level-of-unionisation-is-good.md) - [6.2.6 Wage Determination](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-2-6-wage-determination.md) - [6.2.7 Elasticity of Labour Supply & Demand](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-2-7-elasticity-of-labour-supply-and-demand.md) - [6.2.8 Intervention in Setting Wages](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-2-8-intervention-in-setting-wages.md) - [6.2.9 End of Topic Test - Labour Market](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-2-9-end-of-topic-test-labour-market.md) - [6.2.10 A-A* (AO3/4) - Labour Markets](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-2-10-a-a-ao34-labour-markets.md) - 6.3 Government Intervention - [6.3.1 Reasons for Government Intervention](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-1-reasons-for-government-intervention.md) - [6.3.2 Government Promotion of Competition](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-2-government-promotion-of-competition.md) - [6.3.3 Usefulness of Competition Policy & Examples](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-3-usefulness-of-competition-policy-and-examples.md) - [6.3.4 A-A* (AO3/4) - Modern Competition Policy](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-4-a-a-ao34-modern-competition-policy.md) - [6.3.5 Privatisation](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-5-privatisation.md) - [6.3.6 Government Regulation](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-6-government-regulation.md) - [6.3.7 A-A* (AO3/4) - Nationalisation vs Privatisation](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-7-a-a-ao34-nationalisation-vs-privatisation.md) - [6.3.8 Government Protection of Suppliers and Employees](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-8-government-protection-of-suppliers-and-employees.md) - [6.3.9 Impact of Government Intervention](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-9-impact-of-government-intervention.md) - [6.3.10 End of Topic Test - Government Intervention](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-10-end-of-topic-test-government-intervention.md) - [6.3.11 Application Questions - Government Intervention](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/6-3-11-application-questions-government-intervention.md) ### 7 A Global Perspective - 7.1 International Economics - Globalisation & Trade - [7.1.1 Globalisation](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-1-1-globalisation.md) - [7.1.2 Globalisation for LEDCs](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-1-2-globalisation-for-ledcs.md) - [7.1.3 Globalisation for MEDCs](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-1-3-globalisation-for-medcs.md) - [7.1.4 Specialisation & Trade](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-1-4-specialisation-and-trade.md) - [7.1.5 Pattern of Trade](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-1-5-pattern-of-trade.md) - [7.1.6 Terms of Trade](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-1-6-terms-of-trade.md) - [7.1.7 Trading Blocs](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-1-7-trading-blocs.md) - [7.1.8 UK, EU & WTO](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-1-8-uk-eu-and-wto.md) - [7.1.9 End of Topic Test - Globalisation & Trade](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-1-9-end-of-topic-test-globalisation-and-trade.md) - [7.1.10 A-A* (AO3/4) - Globalisation & Trade](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-1-10-a-a-ao34-globalisation-and-trade.md) - 7.2 International Economics - Currency - [7.2.1 Merged Currency](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-1-merged-currency.md) - [7.2.2 Restrictions on Free Trade](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-2-restrictions-on-free-trade.md) - [7.2.3 Arguments for Protectionism](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-3-arguments-for-protectionism.md) - [7.2.4 Arguments Against Protectionism](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-4-arguments-against-protectionism.md) - [7.2.5 Balance of Payments](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-5-balance-of-payments.md) - [7.2.6 Balance of Payments 2](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-6-balance-of-payments-2.md) - [7.2.7 Floating Exchange Rates](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-7-floating-exchange-rates.md) - [7.2.8 Fixed Exchange Rate](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-8-fixed-exchange-rate.md) - [7.2.9 International Competitiveness](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-9-international-competitiveness.md) - [7.2.10 End of Topic Test - International Economy](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-10-end-of-topic-test-international-economy.md) - [7.2.11 Application Questions - International Economics](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/7-2-11-application-questions-international-economics.md) ### 8 Finance & Inequality - 8.1 Poverty & Inequality - [8.1.1 Absolute & Relative Poverty](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-1-1-absolute-and-relative-poverty.md) - [8.1.2 Inequality](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-1-2-inequality.md) - [8.1.3 Inequality 2](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-1-3-inequality-2.md) - [8.1.4 Lorenz Curve](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-1-4-lorenz-curve.md) - [8.1.5 Government Policy on Poverty](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-1-5-government-policy-on-poverty.md) - [8.1.6 End of Topic Test - Poverty & Inequality](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-1-6-end-of-topic-test-poverty-and-inequality.md) - [8.1.7 A-A* (AO3/4) - Inequality & Poverty](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-1-7-a-a-ao34-inequality-and-poverty.md) - 8.2 Emerging & Developing Economies - [8.2.1 Measures of Development](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-1-measures-of-development.md) - [8.2.2 Factors Influencing Growth & Development](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-2-factors-influencing-growth-and-development.md) - [8.2.3 Barriers to Development](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-3-barriers-to-development.md) - [8.2.4 Barriers to Development 2](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-4-barriers-to-development-2.md) - [8.2.5 A-A* (AO3/4) - The Bottom Billion](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-5-a-a-ao34-the-bottom-billion.md) - [8.2.6 Development Strategies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-6-development-strategies.md) - [8.2.7 Interventionist Strategies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-7-interventionist-strategies.md) - [8.2.8 Aid](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-8-aid.md) - [8.2.9 International Institutions](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-9-international-institutions.md) - [8.2.10 International Institutions 2](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-10-international-institutions-2.md) - [8.2.11 End of Topic Test - Emerging & Developing](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-11-end-of-topic-test-emerging-and-developing.md) - [8.2.12 Application Questions - Developing Countries](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-2-12-application-questions-developing-countries.md) - 8.3 The Financial Sector - [8.3.1 Role of Financial Markets](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-3-1-role-of-financial-markets.md) - [8.3.2 Market Failure in the Financial Sector](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-3-2-market-failure-in-the-financial-sector.md) - [8.3.3 Role of Central Banks](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-3-3-role-of-central-banks.md) - [8.3.4 End of Topic Test - The Financial Sector](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-3-4-end-of-topic-test-the-financial-sector.md) - [8.3.5 A-A* (AO3/4) - Financial Sector](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-3-5-a-a-ao34-financial-sector.md) - 8.4 Role of the State in the Macroeconomy - [8.4.1 Public Expenditure](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-4-1-public-expenditure.md) - [8.4.2 Taxation](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-4-2-taxation.md) - [8.4.3 Public Sector Finances](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-4-3-public-sector-finances.md) - [8.4.4 End of Topic Test - Role of the State](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-4-4-end-of-topic-test-role-of-the-state.md) - [8.4.5 Application Questions - Role of the State](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/8-4-5-application-questions-role-of-the-state.md) ### 9 Examples of Global Policy - 9.1 International Policies - [9.1.1 Global Debt & Deficit Policies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/9-1-1-global-debt-and-deficit-policies.md) - [9.1.2 Poverty & Inequality Policies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/9-1-2-poverty-and-inequality-policies.md) - [9.1.3 Changes in Interest Rates](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/9-1-3-changes-in-interest-rates.md) - [9.1.4 Competitiveness Policies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/9-1-4-competitiveness-policies.md) - [9.1.5 End of Topic Test - International Policies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/9-1-5-end-of-topic-test-international-policies.md) - [9.1.6 A-A* (AO3/4) - International Policies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/9-1-6-a-a-ao34-international-policies.md) - 9.2 Policy Responses to Shocks - [9.2.1 International Tax Policies](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/9-2-1-international-tax-policies.md) - [9.2.2 Problems for Policymakers](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/9-2-2-problems-for-policymakers.md) - [9.2.3 End of Topic Test - Policy Responses](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/9-2-3-end-of-topic-test-policy-responses.md) - [9.2.4 Application Questions - Policy Responses](https://senecalearning.com/en-gb/revision-notes/a-level/economics/edexcel/9-2-4-application-questions-policy-responses.md)