Source: https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-6-the-deadweight-welfare-loss-of-externalities [Revision notes](https://senecalearning.com/en-gb/revision-notes.md) › [IB Diploma](https://senecalearning.com/en-gb/revision-notes/ib-diploma.md) › [Economics](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics.md) › [Economics: IB Diploma](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma.md) › The Deadweight Welfare Loss of Externalities # The Deadweight Welfare Loss of Externalities Economics: IB Diploma, topic 1.4.6 ## Examples of Externalities Consumers under and over consume goods and services because they don't take into account the external benefit or cost of their consumption. Firms can under or overproduce goods because they don't account for externalities in their production. ### Education ![Education](https://image-v2.cdn.app.senecalearning.com/2018-08/bc8a80f1-0f19-485e-96f2-eefd3199c02e/1.8.4%20positive%20consumption%20large.png) - A good with positive consumption externalities is often called a merit good. - Education has a positive consumption externality, so it is a merit good. - In education the MSB>MPB, so it is under consumed in the free market below the socially optimal level. ### Petrol cars ![Petrol cars](https://image-v2.cdn.app.senecalearning.com/2018-08/e93b57ea-e29a-4503-8327-bb36f969e550/1.8.4%20negative%20consumption%20Jack%20check.png) - Petrol cars have negative consumption externalities. This means that they are demerit goods. - Demerit goods are over consumed in the free market. This leads to a deadweight welfare loss to society. ### Absence of property rights ![Absence of property rights](https://image-v2.cdn.app.senecalearning.com/2018-07/23744490-d565-4723-88cb-9e331bc9929b/wordsworth-house-cottage.jpg) - The absence of property rights means that it is not clear who owns what. - For example, it is not clear who owns the environment or air. This can lead firms to pollute more than is optimal because they do not account for external costs. - Ronald Coase found that allocating property rights is one way to stop market failures from happening. This is called Coase Theorem. - The absence of property rights can lead to market failure. ### Renewable energy ![Renewable energy](https://image-v2.cdn.app.senecalearning.com/2018-08/849547ba-1378-4d46-9b84-e6da328fef08/1.8.4%20positive%20externality%20in%20production%2C%20needs%20checking.png) - Renewable energy has positive production externalities. - It can replace the use of fossil fuels which can damage the environment - the opportunity cost would be using something negative instead of something neutral. - Governments have subsidised renewable energy (like wind and solar power) in the US and UK to try to increase production closer to the socially optimal level and deliver a gain in society's welfare. ### Alcohol ![Alcohol](https://image-v2.cdn.app.senecalearning.com/2018-07/9af2634d-3f76-4af7-984f-9f4d51d1a69a/1.8.4%20negative%20consumption%20Jack%20check%20(1).png) - Alcohol has a negative consumption externality. - Excessive alcohol consumption is linked to crime and antisocial behaviour which the rest of society has to deal with. The consumer doesn't pay the cost that the externality causes leading to the overconsumption of the negative consumption externality. - The MSB < MPB and this creates a welfare loss unless the government intervenes. ### Vaccination ![Vaccination](https://image-v2.cdn.app.senecalearning.com/2018-07/32630536-7460-41e1-85fb-44fe448d960a/1.8.4%20positive%20consumption%20Jack%20check.png) - Vaccination has positive consumption externalities. - In addition to protecting someone from an illness, vaccination also reduces the risk of that person spreading the illness. As a result, the rest of society is better protected from the illness due to one person's consumption of the vaccine. This is called herd immunity. ## Test yourself on The Deadweight Welfare Loss of Externalities - What will firms account for when deciding production? - What will consumers account for when deciding how much of a good or service to consume (assuming no intervention)? - Which of the following is an example of a positive consumption externality? - Which of the following have negative externalities in production or consumption? - What is a good with positive consumption externalities often called? [Practise this topic for free](https://app.senecalearning.com/classroom/course/7b55fd22-05a1-435c-9704-355732f0e415/section/2d25ebdd-1fb7-45b8-ab54-d29099e06559/session) - Previous topic: [1.4.5 Positive Externalities](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-5-positive-externalities.md) - Next topic: [1.4.7 Case Study - The Externalities of Education](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-7-case-study-the-externalities-of-education.md) ## Economics: IB Diploma contents ### 1 Microeconomics - 1.1 Competitive Markets: Demand & Suply - [1.1.1 Markets & Demand](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-1-1-markets-and-demand.md) - [1.1.2 Diminishing Marginal Returns](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-1-2-diminishing-marginal-returns.md) - [1.1.3 Supply](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-1-3-supply.md) - [1.1.4 Market Equilibrium](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-1-4-market-equilibrium.md) - [1.1.5 Price Mechanism](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-1-5-price-mechanism.md) - [1.1.6 Consumer & Producer Surplus](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-1-6-consumer-and-producer-surplus.md) - [1.1.7 IB Multiple Choice - Demand](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-1-7-ib-multiple-choice-demand.md) - [1.1.8 IB Multiple Choice - Supply](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-1-8-ib-multiple-choice-supply.md) - 1.2 Elasticity - [1.2.1 Elasticities of Demand](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-2-1-elasticities-of-demand.md) - [1.2.2 Factors Affecting Price Elasticity of Demand](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-2-2-factors-affecting-price-elasticity-of-demand.md) - [1.2.3 Elasticity of Supply](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-2-3-elasticity-of-supply.md) - [1.2.4 Price Elasticity of Supply](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-2-4-price-elasticity-of-supply.md) - [1.2.5 IB Multiple Choice - Price Elasticity of Demand](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-2-5-ib-multiple-choice-price-elasticity-of-demand.md) - [1.2.6 IB Multiple Choice - Price Elasticity of Supply](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-2-6-ib-multiple-choice-price-elasticity-of-supply.md) - [1.2.7 IB Multiple Choice - Other Elasticities](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-2-7-ib-multiple-choice-other-elasticities.md) - 1.3 Government Intervention - [1.3.1 Indirect Taxes & Subsidies](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-3-1-indirect-taxes-and-subsidies.md) - [1.3.2 Application Question - Taxing Prices or Quantities](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-3-2-application-question-taxing-prices-or-quantities.md) - [1.3.3 Subsidies & Price Controls](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-3-3-subsidies-and-price-controls.md) - [1.3.4 Deadweight Loss & Government Intervention](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-3-4-deadweight-loss-and-government-intervention.md) - [1.3.5 Elasticity & Tax Incidence](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-3-5-elasticity-and-tax-incidence.md) - [1.3.6 IB Multiple Choice - Government Intervention](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-3-6-ib-multiple-choice-government-intervention.md) - 1.4 Market Failure - [1.4.1 Types of Market Failure](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-1-types-of-market-failure.md) - [1.4.2 Introduction to Externalities](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-2-introduction-to-externalities.md) - [1.4.3 Negative Externalities](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-3-negative-externalities.md) - [1.4.4 Policy for Negative Externalities](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-4-policy-for-negative-externalities.md) - [1.4.5 Positive Externalities](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-5-positive-externalities.md) - [1.4.6 The Deadweight Welfare Loss of Externalities](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-6-the-deadweight-welfare-loss-of-externalities.md) - [1.4.7 Case Study - The Externalities of Education](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-7-case-study-the-externalities-of-education.md) - [1.4.8 Public Goods & the Free-Rider Problem](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-8-public-goods-and-the-free-rider-problem.md) - [1.4.9 Asymmetric Information](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-9-asymmetric-information.md) - [1.4.10 End of Topic Test - Market Failure](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-10-end-of-topic-test-market-failure.md) - [1.4.11 Application Questions - Market Failure](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-11-application-questions-market-failure.md) - 1.5 HL: Theory of the Firm & Market Structures - [1.5.1 Theory of the Firm & Market Structures](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-5-1-theory-of-the-firm-and-market-structures.md) ### 2 Macroeconomics - 2.1 The Level of Overall Economic Activity - [2.1.1 The Circular Flow of Income](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-1-1-the-circular-flow-of-income.md) - [2.1.2 Defining GDP](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-1-2-defining-gdp.md) - [2.1.3 Limitations of GDP](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-1-3-limitations-of-gdp.md) - [2.1.4 IB Multiple Choice - Economic Indicators](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-1-4-ib-multiple-choice-economic-indicators.md) - [2.1.5 Business Cycles](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-1-5-business-cycles.md) - [2.1.6 Output Gaps](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-1-6-output-gaps.md) - 2.2 Aggregate Demand & Aggregate Supply - [2.2.1 The Aggregate Demand Curve](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-2-1-the-aggregate-demand-curve.md) - [2.2.2 Components of Aggregate Demand](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-2-2-components-of-aggregate-demand.md) - [2.2.3 Shape of the Aggregate Demand Curve](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-2-3-shape-of-the-aggregate-demand-curve.md) - [2.2.4 Shifts in Aggregate Demand](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-2-4-shifts-in-aggregate-demand.md) - [2.2.5 IB Multiple Choice - Aggregate Demand](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-2-5-ib-multiple-choice-aggregate-demand.md) - [2.2.6 Short & Long-Run Aggregate Supply](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-2-6-short-and-long-run-aggregate-supply.md) - [2.2.7 Alternative Models of LRAS](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-2-7-alternative-models-of-lras.md) - [2.2.8 Equilibrium in the AD-AS Model](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-2-8-equilibrium-in-the-ad-as-model.md) - [2.2.9 Output Gaps & the AD-AS Model](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-2-9-output-gaps-and-the-ad-as-model.md) - 2.3 Macroeconomic Objectives - [2.3.1 Introduction to Unemployment](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-1-introduction-to-unemployment.md) - [2.3.2 Limitations of Unemployment](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-2-limitations-of-unemployment.md) - [2.3.3 Types of Unemployment](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-3-types-of-unemployment.md) - [2.3.4 Causes & Impact of Unemployment](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-4-causes-and-impact-of-unemployment.md) - [2.3.5 Defining Inflation](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-5-defining-inflation.md) - [2.3.6 Measuring Inflation](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-6-measuring-inflation.md) - [2.3.7 Use of Index Numbers](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-7-use-of-index-numbers.md) - [2.3.8 The Consumer Price Index](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-8-the-consumer-price-index.md) - [2.3.9 Consequences of Inflation](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-9-consequences-of-inflation.md) - [2.3.10 Causes of Inflation](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-10-causes-of-inflation.md) - [2.3.11 Inflation & Unemployment Tradeoff](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-11-inflation-and-unemployment-tradeoff.md) - [2.3.12 The Short-Run Phillips Curve](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-12-the-short-run-phillips-curve.md) - [2.3.13 The Long-Run Phillips Curve](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-3-13-the-long-run-phillips-curve.md) - 2.4 Economic Growth, Poverty & Inequality - [2.4.1 Measuring Economic Growth](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-4-1-measuring-economic-growth.md) - [2.4.2 Determinants of Productivity](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-4-2-determinants-of-productivity.md) - [2.4.3 Economic Growth & Productivity](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-4-3-economic-growth-and-productivity.md) - [2.4.4 Absolute & Relative Poverty](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-4-4-absolute-and-relative-poverty.md) - [2.4.5 Inequality](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-4-5-inequality.md) - [2.4.6 Inequality 2](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-4-6-inequality-2.md) - [2.4.7 Lorenz Curve](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-4-7-lorenz-curve.md) - [2.4.8 Government Policy on Poverty](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-4-8-government-policy-on-poverty.md) - [2.4.9 End of Topic Test - Poverty & Inequality](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-4-9-end-of-topic-test-poverty-and-inequality.md) - [2.4.10 Application - Inequality & Poverty](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-4-10-application-inequality-and-poverty.md) - 2.5 Fiscal Policy - [2.5.1 Introduction to Fiscal Policy](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-5-1-introduction-to-fiscal-policy.md) - [2.5.2 Fiscal Policy and AD-AS Model](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-5-2-fiscal-policy-and-ad-as-model.md) - [2.5.3 Fiscal Policy Lags](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-5-3-fiscal-policy-lags.md) - [2.5.4 Automatic Stabilizers](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-5-4-automatic-stabilizers.md) - [2.5.5 IB Multiple Choice - Fiscal Policy](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-5-5-ib-multiple-choice-fiscal-policy.md) - 2.6 Monetary Policy - [2.6.1 Objectives of Monetary Policy](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-6-1-objectives-of-monetary-policy.md) - [2.6.2 Monetary Policy Implementation](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-6-2-monetary-policy-implementation.md) - [2.6.3 Monetary Policy & AD-AS Model](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-6-3-monetary-policy-and-ad-as-model.md) - [2.6.4 Monetary Policy Lags & Pitfalls](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-6-4-monetary-policy-lags-and-pitfalls.md) - 2.7 Supply-Side Policies - [2.7.1 Supply-Side Policies](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-7-1-supply-side-policies.md) - [2.7.2 Supply-Side Policies 2](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/2-7-2-supply-side-policies-2.md) ### 3 The Global Economy - 3.1 International Trade - [3.1.1 Globalisation](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-1-1-globalisation.md) - [3.1.2 Globalisation for LEDCs](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-1-2-globalisation-for-ledcs.md) - [3.1.3 Globalisation for MEDCs](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-1-3-globalisation-for-medcs.md) - [3.1.4 Comparative Advantage & Trade](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-1-4-comparative-advantage-and-trade.md) - [3.1.5 Protectionism](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-1-5-protectionism.md) - [3.1.6 Arguments for Protectionism](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-1-6-arguments-for-protectionism.md) - [3.1.7 Arguments Against Protectionism](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-1-7-arguments-against-protectionism.md) - [3.1.8 End of Topic Test - Globalisation & Trade](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-1-8-end-of-topic-test-globalisation-and-trade.md) - [3.1.9 Case Study - Globalisation & Trade](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-1-9-case-study-globalisation-and-trade.md) - 3.2 Exchange Rates - [3.2.1 Floating Exchange Rates](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-2-1-floating-exchange-rates.md) - [3.2.2 Fixed Exchange Rate](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-2-2-fixed-exchange-rate.md) - [3.2.3 Effect of a Stronger & Weaker Dollar](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-2-3-effect-of-a-stronger-and-weaker-dollar.md) - 3.3 The Balance of Payments - [3.3.1 Balance of Payments](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-3-1-balance-of-payments.md) - [3.3.2 Balance of Payments 2](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-3-2-balance-of-payments-2.md) - [3.3.3 FDI & Reducing a BoP Deficit](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-3-3-fdi-and-reducing-a-bop-deficit.md) - 3.4 Economic Integration - [3.4.1 Customs Unions & WTO](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-4-1-customs-unions-and-wto.md) - [3.4.2 Merged Currency](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-4-2-merged-currency.md) - 3.5 Terms of Trade - [3.5.1 Absolute & Comparative Advantage](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-5-1-absolute-and-comparative-advantage.md) - [3.5.2 Gains from Trade](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-5-2-gains-from-trade.md) - [3.5.3 Terms of Trade](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-5-3-terms-of-trade.md) - [3.5.4 IB Multiple Choice - Comparative Advantage & Trade](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-5-4-ib-multiple-choice-comparative-advantage-and-trade.md) - 3.6 Economic Development - [3.6.1 Factors Influencing Growth & Development](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-6-1-factors-influencing-growth-and-development.md) - [3.6.2 International Institutions](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-6-2-international-institutions.md) - [3.6.3 Measures of Development](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-6-3-measures-of-development.md) - [3.6.4 Barriers to Development](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-6-4-barriers-to-development.md) - [3.6.5 Case Study - The Bottom Billion](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-6-5-case-study-the-bottom-billion.md) - [3.6.6 End of Topic Test - Emerging & Developing](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-6-6-end-of-topic-test-emerging-and-developing.md) - 3.7 The Role of Domestic & International Factors - [3.7.1 Interventionist Strategies](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-7-1-interventionist-strategies.md) - [3.7.2 Development Strategies](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-7-2-development-strategies.md) - [3.7.3 Development Promotion Policies](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-7-3-development-promotion-policies.md) - [3.7.4 End of Topic Test - Growth & Global Development](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-7-4-end-of-topic-test-growth-and-global-development.md) - [3.7.5 Application Questions -Growth & Global Development](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-7-5-application-questions-growth-and-global-development.md) - 3.8 The Role of International Trade - [3.8.1 International Institutions](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-8-1-international-institutions.md) - [3.8.2 End of Topic Test - Globalisation & Trade](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-8-2-end-of-topic-test-globalisation-and-trade.md) - 3.9 The Role of Foreign Aid - [3.9.1 Aid](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-9-1-aid.md) - [3.9.2 Limitations of Aid](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-9-2-limitations-of-aid.md) - [3.9.3 Support for Aid](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-9-3-support-for-aid.md) - [3.9.4 Application Questions - Developing Countries](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/3-9-4-application-questions-developing-countries.md)