2.1.6
Information Gaps
Information Needed for Decision-Making
Information Needed for Decision-Making
Purchases are based on a belief that a particular good or service will provide satisfaction. These beliefs are based on information. So, information is very important for purchase decision-making.
What is asymmetric information?
What is asymmetric information?
- A situation of asymmetric information happens when both parties in a transaction have an unequal amount of information.
- Asymmetric information can cause a decline in prices or quantity of products sold.
The 'Lemons' problem
The 'Lemons' problem
- Consider Marvin, who is buying a used car from a dealership.
- The car could either be a 'lemon', which is a defective vehicle, or a high quality vehicle. Because of asymmetric information, Marvin does not know which the car is.
- This is called a misallocation of resources.
- This limits his ability to make a rational choice and pay the appropriate price for the car.
Implications of Imperfect Information
Implications of Imperfect Information
Imperfect information can discourage buyers and sellers from participating in the market.
Thin and thick markets
Thin and thick markets
- If buyers and sellers are discouraged from participating in the market, there will be fewer active in the market.
- This is a thin market.
- If there are many buyers and sellers, it's called a thick market.
Price signalling
Price signalling
- Buyers with imperfect information often think that price signals product quality.
- E.g A Michelin-starred restaurant selling expensive food is often assumed to be of better quality than a cheaper alternative, like McDonalds.
- When buyers use market price to make assumptions about quality, markets can struggle to reach an equilibrium price and quantity.
Merit and Demerit Goods - Imperfect Information
Merit and Demerit Goods - Imperfect Information
Imperfect information is when buyers and sellers have unequal information. It can lead to the over and under consumption of goods in the free market.
Merit goods
Merit goods
- Consumers take into account only the private benefit.
- If they had perfect information, they might realise the additional benefits a merit good can bring.
- E.g they may realise how beneficial education is.
Demerit goods
Demerit goods
- Consumers only realise the private gain.
- If they had perfect information, they might realise the negative effects consumption of the good can bring.
- E.g consumers may not realise the effect smoking can have due to imperfect information.
1Introduction to Markets
1.1Nature of Economics
1.1.1Economics as a Social Science
1.1.2Positive & Normative Economic Statements
1.1.3The Economic Problem
1.1.4Resources
1.1.5Production Possibility Frontiers
1.1.6Specialisation & Division of Labour
1.1.7Types of Economies
1.1.8End of Topic Test - Nature of Economics
1.1.9Application Questions - Nature of Economics
1.2How Markets Work
1.2.1Rational Decision Making
1.2.2Demand
1.2.3Elasticities of Demand
1.2.4Elasticities of Demand 2
1.2.5Elasticity & Revenue
1.2.6Supply
1.2.7Elasticity of Supply
1.2.8Price Determination
1.2.9Price Mechanism
1.2.10Consumer & Producer Surplus
1.2.11Indirect Taxes & Subsidies
1.2.12A-A* (AO3/4) - Taxing Prices or Quantities?
1.2.13Alternative View of Consumer Behaviour
1.2.14End of Topic Test - Markets
1.2.15A-A* (AO3/4) - Markets
2Market Failure
2.1Market Failure
2.2Government Intervention
2.2.1Government Intervention in Markets
2.2.2Subsidies & Price Controls
2.2.3Pollution Permits & Regulation
2.2.4A-A* (AO3/4) - European Emissions Trading
2.2.5State Provision & Information Provision
2.2.6Government Failure
2.2.7End of Topic Test - Government Intervention
2.2.8A-A* (AO3/4) - Government Intervention
3The UK Macroeconomy
3.1Measures of Economic Performance
3.1.1Measuring Economic Growth
3.1.2National Income Data
3.1.3Inflation
3.1.4Causes of Inflation
3.1.5Consequences of Inflation
3.1.6Employment & Unemployment
3.1.7Causes & Impact of Unemployment
3.1.8A-A* (AO3/4) - Hysteresis
3.1.9Balance of Payments
3.1.10Current Account Deficit & Imbalances
3.1.11End of Topic Test - Economic Performance
3.1.12Application Questions Macroeconomy
3.2Aggregate Demand
3.3Aggregate Supply
3.4National Income
4The UK Economy - Policies
4.1Macroeconomic Objectives & Policies
4.1.1Possible Objectives
4.1.2Demand-Side Policies - Monetary
4.1.3Demand-Side Policies - Monetary 2
4.1.4A-A* (AO3/4) - The Future of Interest Rates
4.1.5Demand-Side Policies - Fiscal
4.1.6Demand-Side Policies in 2007-08
4.1.7Strengths & Weaknesses of Demand Side
4.1.8Supply-Side Policies
4.1.9Supply-Side Policies 2
4.1.10Conflicts Between Objectives
4.1.11A-A* (AO3/4) - Conflicting Incentives
4.1.12Phillips Curve
4.1.13End of Topic Topic - Policies & Objectives
4.1.14Application Questions - UK Policies
5Business Behaviour
5.1Business Growth
5.2Business Objectives
6Market Structures
6.1Market Structures
6.1.1Efficiency
6.1.2Perfect Competition
6.1.3Perfect Competition 2
6.1.4Monopolistic Competition
6.1.5Oligopolies
6.1.6The Prisoner's Dilemma
6.1.7Collusion in Oligopolistic Markets
6.1.8A-A* (AO3/4) - Which Factors Affect Collusion?
6.1.9Monopolies
6.1.10Price Discrimination
6.1.11Monopsony
6.1.12A-A* (AO3/4) - Models in Economics
6.1.13Contestability
6.1.14Benefits of Contestability
6.1.15End of Topic Test - Market Structures
6.1.16Application Questions - Market Structures
6.1.17A-A* (AO3/4) - Cereal Collusion
6.2Labour Market
6.2.1Demand for Labour
6.2.2Supply of Labour
6.2.3Labour Market Imperfections
6.2.4A-A* (AO3/4) - Labour Productivity & Unemployment
6.2.5A-A* (AO3/4) - What Level of Unionisation is Good?
6.2.6Wage Determination
6.2.7Elasticity of Labour Supply & Demand
6.2.8Intervention in Setting Wages
6.2.9End of Topic Test - Labour Market
6.2.10A-A* (AO3/4) - Labour Markets
6.3Government Intervention
6.3.1Reasons for Government Intervention
6.3.2Government Promotion of Competition
6.3.3Usefulness of Competition Policy & Examples
6.3.4A-A* (AO3/4) - Modern Competition Policy
6.3.5Privatisation
6.3.6Government Regulation
6.3.7A-A* (AO3/4) - Nationalisation vs Privatisation
6.3.8Government Protection of Suppliers and Employees
6.3.9Impact of Government Intervention
6.3.10End of Topic Test - Government Intervention
6.3.11Application Questions - Government Intervention
7A Global Perspective
7.1International Economics - Globalisation & Trade
7.2International Economics - Currency
7.2.1Merged Currency
7.2.2Restrictions on Free Trade
7.2.3Arguments for Protectionism
7.2.4Arguments Against Protectionism
7.2.5Balance of Payments
7.2.6Balance of Payments 2
7.2.7Floating Exchange Rates
7.2.8Fixed Exchange Rate
7.2.9International Competitiveness
7.2.10End of Topic Test - International Economy
7.2.11Application Questions - International Economics
8Finance & Inequality
8.1Poverty & Inequality
8.2Emerging & Developing Economies
8.2.1Measures of Development
8.2.2Factors Influencing Growth & Development
8.2.3Barriers to Development
8.2.4Barriers to Development 2
8.2.5A-A* (AO3/4) - The Bottom Billion
8.2.6Development Strategies
8.2.7Interventionist Strategies
8.2.8Aid
8.2.9International Institutions
8.2.10International Institutions 2
8.2.11End of Topic Test - Emerging & Developing
8.2.12Application Questions - Developing Countries
8.3The Financial Sector
8.4Role of the State in the Macroeconomy
9Examples of Global Policy
9.1International Policies
Jump to other topics
1Introduction to Markets
1.1Nature of Economics
1.1.1Economics as a Social Science
1.1.2Positive & Normative Economic Statements
1.1.3The Economic Problem
1.1.4Resources
1.1.5Production Possibility Frontiers
1.1.6Specialisation & Division of Labour
1.1.7Types of Economies
1.1.8End of Topic Test - Nature of Economics
1.1.9Application Questions - Nature of Economics
1.2How Markets Work
1.2.1Rational Decision Making
1.2.2Demand
1.2.3Elasticities of Demand
1.2.4Elasticities of Demand 2
1.2.5Elasticity & Revenue
1.2.6Supply
1.2.7Elasticity of Supply
1.2.8Price Determination
1.2.9Price Mechanism
1.2.10Consumer & Producer Surplus
1.2.11Indirect Taxes & Subsidies
1.2.12A-A* (AO3/4) - Taxing Prices or Quantities?
1.2.13Alternative View of Consumer Behaviour
1.2.14End of Topic Test - Markets
1.2.15A-A* (AO3/4) - Markets
2Market Failure
2.1Market Failure
2.2Government Intervention
2.2.1Government Intervention in Markets
2.2.2Subsidies & Price Controls
2.2.3Pollution Permits & Regulation
2.2.4A-A* (AO3/4) - European Emissions Trading
2.2.5State Provision & Information Provision
2.2.6Government Failure
2.2.7End of Topic Test - Government Intervention
2.2.8A-A* (AO3/4) - Government Intervention
3The UK Macroeconomy
3.1Measures of Economic Performance
3.1.1Measuring Economic Growth
3.1.2National Income Data
3.1.3Inflation
3.1.4Causes of Inflation
3.1.5Consequences of Inflation
3.1.6Employment & Unemployment
3.1.7Causes & Impact of Unemployment
3.1.8A-A* (AO3/4) - Hysteresis
3.1.9Balance of Payments
3.1.10Current Account Deficit & Imbalances
3.1.11End of Topic Test - Economic Performance
3.1.12Application Questions Macroeconomy
3.2Aggregate Demand
3.3Aggregate Supply
3.4National Income
4The UK Economy - Policies
4.1Macroeconomic Objectives & Policies
4.1.1Possible Objectives
4.1.2Demand-Side Policies - Monetary
4.1.3Demand-Side Policies - Monetary 2
4.1.4A-A* (AO3/4) - The Future of Interest Rates
4.1.5Demand-Side Policies - Fiscal
4.1.6Demand-Side Policies in 2007-08
4.1.7Strengths & Weaknesses of Demand Side
4.1.8Supply-Side Policies
4.1.9Supply-Side Policies 2
4.1.10Conflicts Between Objectives
4.1.11A-A* (AO3/4) - Conflicting Incentives
4.1.12Phillips Curve
4.1.13End of Topic Topic - Policies & Objectives
4.1.14Application Questions - UK Policies
5Business Behaviour
5.1Business Growth
5.2Business Objectives
6Market Structures
6.1Market Structures
6.1.1Efficiency
6.1.2Perfect Competition
6.1.3Perfect Competition 2
6.1.4Monopolistic Competition
6.1.5Oligopolies
6.1.6The Prisoner's Dilemma
6.1.7Collusion in Oligopolistic Markets
6.1.8A-A* (AO3/4) - Which Factors Affect Collusion?
6.1.9Monopolies
6.1.10Price Discrimination
6.1.11Monopsony
6.1.12A-A* (AO3/4) - Models in Economics
6.1.13Contestability
6.1.14Benefits of Contestability
6.1.15End of Topic Test - Market Structures
6.1.16Application Questions - Market Structures
6.1.17A-A* (AO3/4) - Cereal Collusion
6.2Labour Market
6.2.1Demand for Labour
6.2.2Supply of Labour
6.2.3Labour Market Imperfections
6.2.4A-A* (AO3/4) - Labour Productivity & Unemployment
6.2.5A-A* (AO3/4) - What Level of Unionisation is Good?
6.2.6Wage Determination
6.2.7Elasticity of Labour Supply & Demand
6.2.8Intervention in Setting Wages
6.2.9End of Topic Test - Labour Market
6.2.10A-A* (AO3/4) - Labour Markets
6.3Government Intervention
6.3.1Reasons for Government Intervention
6.3.2Government Promotion of Competition
6.3.3Usefulness of Competition Policy & Examples
6.3.4A-A* (AO3/4) - Modern Competition Policy
6.3.5Privatisation
6.3.6Government Regulation
6.3.7A-A* (AO3/4) - Nationalisation vs Privatisation
6.3.8Government Protection of Suppliers and Employees
6.3.9Impact of Government Intervention
6.3.10End of Topic Test - Government Intervention
6.3.11Application Questions - Government Intervention
7A Global Perspective
7.1International Economics - Globalisation & Trade
7.2International Economics - Currency
7.2.1Merged Currency
7.2.2Restrictions on Free Trade
7.2.3Arguments for Protectionism
7.2.4Arguments Against Protectionism
7.2.5Balance of Payments
7.2.6Balance of Payments 2
7.2.7Floating Exchange Rates
7.2.8Fixed Exchange Rate
7.2.9International Competitiveness
7.2.10End of Topic Test - International Economy
7.2.11Application Questions - International Economics
8Finance & Inequality
8.1Poverty & Inequality
8.2Emerging & Developing Economies
8.2.1Measures of Development
8.2.2Factors Influencing Growth & Development
8.2.3Barriers to Development
8.2.4Barriers to Development 2
8.2.5A-A* (AO3/4) - The Bottom Billion
8.2.6Development Strategies
8.2.7Interventionist Strategies
8.2.8Aid
8.2.9International Institutions
8.2.10International Institutions 2
8.2.11End of Topic Test - Emerging & Developing
8.2.12Application Questions - Developing Countries
8.3The Financial Sector
8.4Role of the State in the Macroeconomy
9Examples of Global Policy
9.1International Policies
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