Numbers
AQA A-Level Economics 7136
Economic Methodology and the Economic Problem
Individual Economic Decision Making
Price Determination in a Competitive Market
Topic overviewDemand, the demand curve, income and wealthSubstitutes, complements and consumer preferencesPrice elasticity of demand and total revenueThe determinants of price elasticity of demandIncome and cross elasticity of demandThe determinants of supplyPrice elasticity of supplyEquilibrium, disequilibrium and how a market clearsShifts in demand and supply, and the price mechanismThe interrelationship between markets
Production, Costs and Revenue
Perfect Competition, Imperfectly Competitive Markets and Monopoly
Topic overviewThe characteristics of the four market structuresPrice takers, price makers and non-price competitionCompetitive marketsThe objectives of firmsProfit maximisation and the divorce of ownership from controlProfit maximisation and the shutdown conditionPrice taking, entry and exit, and long-run equilibriumEfficiency in perfect competition and its assumptionsMonopolistic competition in the short runMonopolistic competition in the long runThe characteristics of oligopoly and barriers to entryThe kinked demand curve and price rigidityCollusion, cartels and price leadershipNon-price competition in oligopolyThe advantages and disadvantages of oligopolyMonopoly power and barriers to entryThe monopoly diagram and supernormal profitThe costs and benefits of monopolyPrice discriminationThe dynamics of competitionCreative destruction and the competitive market processContestable and non-contestable marketsStatic and dynamic efficiencyMarket structure and resource allocationConsumer and producer surplus
The Labour Market
The Distribution of Income and Wealth: Poverty and Inequality
Topic overviewIncome, wealth and the causes of their distributionEquality, equity, the Lorenz curve and the Gini coefficientThe arguments about inequalityThe problem of povertyProgressive taxation and transfer paymentsMeans-tested benefits, universal benefits and the poverty trapWealth taxes and state provisionEvaluating redistribution
The Market Mechanism, Market Failure and Government Intervention
Topic overviewHow markets and prices allocate resourcesThe meaning of market failurePublic goods, private goods and quasi-public goodsPositive and negative externalitiesMerit and demerit goodsMarket imperfectionsAn inequitable distribution of income and wealthIndirect taxes and subsidiesPrice controls, state provision and regulationPollution permits and the extension of property rightsEvaluating intervention and the mixed economyGovernment failureCompetition policyPublic ownership, privatisation, regulation and deregulation
The Measurement of Macroeconomic Performance
How the Macroeconomy Works
Topic overviewThe circular flow of incomeThe aggregate demand and aggregate supply curvesWhat shifts short-run and long-run aggregate supplyMacroeconomic equilibrium and economic shocksConsumption and investmentGovernment spending and net exportsThe accelerator, saving and investmentAggregate demand and the level of economic activityThe determinants of aggregate supply
Economic Performance
Topic overviewShort-run and long-run economic growthThe economic cycle and output gapsDemand-side and supply-side shocksMeasuring unemployment and the types of unemploymentThe determinants of employment and policies to reduce unemploymentInflation and deflationThe quantity theory of moneyConsequences of inflation and deflationThe balance of payments on current accountOutput gaps and the growth-inflation conflictReconciling policy objectives in the AD/AS model
Financial Markets and Monetary Policy
Topic overviewThe characteristics and functions of moneyFinancial markets and their roleDebt, equity and bond yieldsCommercial banks, investment banks and the balance sheetLiquidity, profitability, security and credit creationThe instruments and institutions of monetary policyHow bank rate changes affect the economyWhat the MPC considers, and the exchange rate channelThe functions of a central bankThe bank rate and the MPC's decisionsExchange rate movements and the macroeconomyThe monetary policy transmission mechanismQuantitative easing and unconventional policyThe regulators and the risks banks faceLiquidity ratios, capital ratios and systemic risk
Fiscal Policy and Supply-Side Policies
Topic overviewFiscal policy and aggregate demandTypes of taxThe budget balance and the national debtThe purposes of public expenditure and taxationThe principles of taxationBudget deficits, surpluses and their effectsThe national debt and fiscal rulesSupply-side policies and how they workMarket-based and interventionist supply-side policies
The International Economy
Topic overviewThe causes and characteristics of globalisationThe impact of globalisation on developed and developing economiesMultinational corporationsComparative and absolute advantageThe effects of trade and changing trade patternsTariffs, quotas and the tariff diagramArguments for and against protectionismTrading blocs and the World Trade OrganisationThe components of the balance of paymentsCauses of current account imbalances and investment flowsCorrecting imbalances and their consequencesHow exchange rates are determined in a floating systemGovernment intervention and fixed exchange ratesFloating rates and currency unionsGrowth, development and less-developed economiesMeasuring development: the HDI and other indicatorsInvestment and education as drivers of developmentCorruption, governance and institutional barriersInfrastructure, human capital and property rightsMarket-based and interventionist development strategiesAid and trade as development strategiesGrowth, globalisation and inequality
Perfect Competition, Imperfectly Competitive Markets and Monopoly
The characteristics of oligopoly and barriers to entry
- 4 things to know
- Papers 1 and 3
Overview
Interdependence, concentration ratios, and the barriers that keep oligopolistic markets concentrated.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Numbers
How is a concentration ratio calculated, what is it when the three largest firms hold 24%, 14% and 27%, and how is oligopoly defined by conduct?
Numbers
How do capital requirements, economies of scale and brand loyalty keep new firms out?
Process
How do patents, control of resources and predatory pricing act as barriers to entry?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is an oligopoly?
Model answer
A market structure characterised by a small number of large firms that dominate the market.
- 2
What does a high concentration ratio indicate about an oligopolistic market?
Model answer
A high concentration ratio indicates that a large proportion of the market share is held by a small number of dominant firms.
- 3
Why is interdependence between firms a defining characteristic of oligopoly?
Model answer
Because each firm's pricing and output decisions directly affect the profits of rival firms, so firms must consider competitors' likely reactions when making strategic decisions.
- 4
How do barriers to entry function as a characteristic of oligopolistic markets?
Model answer
Barriers to entry prevent or deter new firms from entering the market, allowing existing oligopolists to maintain their dominant market positions and earn supernormal profits in the long run.
- 5
What is non-price competition and why is it prevalent in oligopolistic markets?
Model answer
Non-price competition involves firms competing through methods other than price, such as advertising, branding, product differentiation, and quality improvements. It is prevalent because price competition can trigger damaging price wars due to interdependence.
- 6
What would happen if an oligopolist ignored the interdependence between firms when setting prices?
Model answer
The firm might trigger retaliatory responses from rivals, such as a price war if it cuts prices, potentially reducing profits for all firms in the market.
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