Source: https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-2-introduction-to-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) › Introduction to Externalities # Introduction to Externalities Economics: IB Diploma, topic 1.4.2 ## Externalities Externalities occur when third parties are affected by private market transactions. Externalities can be either negative or positive. ### Private markets ![Private markets](https://image-v2.cdn.app.senecalearning.com/2019-05/af4fbf14-ff8d-49a8-8879-af0b6060e900/picture-phone-.jpg) - Private markets, such as the cell phone industry, offer an efficient way to put buyers and sellers together and determine what goods they produce, how they produce them and who gets them. - The principle that voluntary exchange benefits both buyers and sellers is a fundamental building block of the economic way of thinking. - However, what happens when a voluntary exchange affects a third party who is neither the buyer nor the seller? ### Illustrative example ![Illustrative example](https://image-v2.cdn.app.senecalearning.com/2019-05/8e6c11de-e9e5-4a2a-a8f3-2591ff1fa3fc/concert-live%20music-dance-party-club-min.jpg) - As an example, consider a concert producer who wants to build an outdoor arena that will host country music concerts a half-mile from your neighborhood. - You will be able to hear these outdoor concerts while sitting on your back porch—or perhaps even in your dining room. - In this case, the sellers and buyers of concert tickets may both be quite satisfied with their voluntary exchange, but you have no voice in their market transaction. - Externalities can be negative or positive. If you hate country music, then having it waft into your house every night would be a negative externality (and vice versa!). ### Externalities defined ![Externalities defined](https://image-v2.cdn.app.senecalearning.com/2019-07/cf625b8e-2164-4784-b451-aaf35c7ebe46/market-3466906_1920.jpg) - The effect of a market exchange on a third party who is outside or “external” to the exchange is called an externality. - Because externalities that occur in market transactions affect other parties beyond those involved, they are sometimes called spillovers. ## Test yourself on Introduction to Externalities - What is pollution an example of? [Practise this topic for free](https://app.senecalearning.com/classroom/course/7b55fd22-05a1-435c-9704-355732f0e415/section/cb7bb677-8494-4efc-8888-32eda88e78fd/session) - Previous topic: [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) - Next topic: [1.4.3 Negative Externalities](https://senecalearning.com/en-gb/revision-notes/ib-diploma/economics/economics-ib-diploma/1-4-3-negative-externalities.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)