IB DP Economics: Barriers and strategies for growth and development

This guide follows the IB Diploma Programme Economics guide (first assessment 2022, published February 2020), the course examined from the 2022 session onwards. It covers sub-topic 4.9, barriers to economic growth and/or economic development, and sub-topic 4.10, growth and/or development strategies, in Unit 4 The global economy. Neither sub-topic contains HL-only content, so both are for SL and HL. The countries, firms and figures below are made up.

See the IB DP Economics hub and the printable checklist. Condensed recall is in the revision notes and exam-style work is in the practice set. Related units: economic integration and inequality and poverty. To find your weak spots first, try the free diagnostics.

What 4.9 and 4.10 ask you to do

Content	Skill
Poverty traps and poverty cycles	Explain them and draw a poverty cycle diagram
Economic barriers (nine listed)	Explain each and apply it to a country
Political and social barriers (four groups listed)	Explain each and apply it to a country
Significance of barriers	Judge which matter most
Strategies (trade, diversification, social enterprise, market-based, interventionist, merit goods, FDI, aid, multilateral assistance, institutional change)	Explain each and apply it
Strengths and limitations	Weigh strategies, and intervention against markets
Sustainable Development Goals	Judge progress toward selected goals in two or more countries

The guide gives Unit 4 as a whole 45 teaching hours at SL and 65 at HL, with no separate figure for 4.9 and 4.10. It sets the depth at application and analysis (AO2), with a diagram skill (AO4) for poverty cycles and evaluation (AO3) for significance and for strengths and limitations. For 4.10 it expects you to draw on the diagrams from other sections rather than learn new ones. Paper 1 is an extended-response paper with parts (a) and (b); only part (b) carries evaluation. Calculators are not allowed in it.

Poverty traps and poverty cycles

A poverty cycle is a set of linked factors that keep people or a country poor, so that low income today causes low income tomorrow. A poverty trap is the same idea seen as a situation that is hard to leave without outside help or a large change. The guide says any linked combination of factors is acceptable in your diagram.

Low income
   |
   v
Low saving and low tax revenue
   |
   v
Low investment in capital, health and education
   |
   v
Low productivity
   |
   v
Low income  (back to the start)

Name each link and say why it follows. Low income leaves little to save, so little is lent for investment. A poor government collects little tax, so it cannot fund schools and clinics. Low human capital means low output per worker, which keeps income low. A cycle can start at any box: poor health also lowers productivity and income. One large push at any point, such as a health programme, can break the loop.

Economic barriers

Rising economic inequality. If gains go mostly to the richest households, the poor cannot afford education or start businesses, and demand from the many stays weak.

Lack of access to infrastructure and appropriate technology. Poor roads, unreliable power and weak telecommunications raise firms’ costs and keep farmers away from markets. Appropriate technology fits local skills, costs and conditions. A tractor that needs imported parts and fuel may help less than a cheap pump that villagers can repair.

Low human capital. Without healthcare and education, workers are less productive and fewer can adopt new methods.

Dependence on primary sector production. Primary goods often have volatile prices, low value added and weak long-run demand growth compared with manufactures. Example: the invented country Halvern. Exports are 4.0 billion halvs a year, of which copper is 2.8 billion.

Copper share of exports = 2.8 / 4.0 = 70%
Copper price falls 25%, volume unchanged:
New copper earnings = 2.8 x 0.75 = 2.1 billion
New export total = 4.0 - 2.8 + 2.1 = 3.3 billion
Fall in total export earnings = 0.7 / 4.0 = 17.5%

A single price fall cuts export earnings by 17.5%, which squeezes imports, tax revenue and investment. That is the case for diversification (see below).

Lack of access to international markets. Trade barriers abroad, weak transport links and poor quality standards keep producers from selling where prices are higher and where scale economies are available.

Informal economy. Informal workers and firms operate outside registration and tax. In Brevane, GDP is 50 billion brevs and informal output is 20 billion, so the informal share is 20/50 = 40%. If that output were taxed at the 15% average rate, extra revenue would be 20 x 0.15 = 3.0 billion. Informal workers lack legal protection and credit, and informal firms stay small.

Capital flight. Savings and investment funds leave the country, often because of political risk, fear of inflation or a weak currency. If Brevane’s investment is 6.0 billion and 1.5 billion leaves each year, the outflow equals 1.5/6.0 = 25% of domestic investment.

Indebtedness. High debt means interest and repayments absorb export earnings and tax revenue. In Quillon, debt service is 0.9 billion quills and exports are 3.0 billion, so the debt service ratio is 0.9/3.0 = 30%. If the government pays all of it from revenue of 6.0 billion, that is 0.9/6.0 = 15% of revenue, equal to the 0.9 billion spent on education.

Geography, including landlocked countries. A landlocked country must send trade through neighbours’ ports and roads, which adds cost and delay and gives neighbours bargaining power.

Tropical climates and endemic diseases. Diseases always present in a region reduce health, school attendance and working lives.

Political and social barriers

Weak institutional framework. Institutions are the rules and organisations that shape economic behaviour. The guide lists four:

• Legal system. If contracts cannot be enforced cheaply, firms avoid long-term deals and investors stay away.
• Ineffective taxation structures. A narrow tax base or poor collection leaves too little revenue for public goods.
• Banking system. Weak banks cannot turn savings into loans, so small firms find credit scarce or costly.
• Property rights. Without secure title, owners cannot use land as security for loans and have little reason to improve it.

Gender inequality. If women have less access to school, jobs, credit or land, the economy wastes talent, and families that invest in girls’ health and education see long-run gains foregone.

Lack of good governance and corruption. Bribes act like an arbitrary tax, divert public funds, deter investors and weaken trust in the state.

Unequal political power and status. If a group holds power, policy may protect its interests, such as keeping land concentrated, instead of serving the wider population.

Judging how significant a barrier is

The guide asks for the significance of barriers, which is an evaluation task. Use these questions:

• Size: how many people, or how much output, does it affect?
• Root or symptom: does it cause others? Weak institutions may explain corruption, capital flight and informality together.
• Country context: landlocked geography matters more to Halvern than to an island nation, and indebtedness matters most when the debt service ratio is high.
• Interaction: barriers reinforce each other, so removing one may not be enough.

Reach a reasoned judgement and justify it.

Strategies in 4.10

Trade strategies. Import substitution shields and supports domestic producers so that they replace imports, for example through tariffs or subsidies. Strength: it builds industries and saves foreign exchange. Limits: protected firms may stay inefficient and consumers pay higher prices. Export promotion supports firms that sell abroad, using subsidies, exchange rate policy or trade fairs. It earns foreign exchange and gives scale, but depends on foreign demand and may be costly. Economic integration means joining a trade bloc or other arrangement, widening markets and competition, though some domestic industries lose out.

Diversification. Moving into more products and markets reduces exposure to one price fall, like Halvern’s copper loss.

Social enterprise. A business that pursues social or environmental aims and reinvests most profit in them. It can reach people that profit-seeking firms ignore, but it may be small and short of finance.

Market-based policies. Trade liberalisation cuts tariffs and quotas, giving cheaper inputs, competition and export access, but exposing weak industries. Privatisation sells state assets to private owners, which can raise efficiency and raise cash for the state. It can also create private monopolies, job losses and poor service for the poor. Deregulation removes rules, lowering costs of starting firms, though it may weaken protection for workers, consumers or the environment.

Interventionist policies. Redistribution uses progressive taxes, transfer payments and minimum wages to raise low incomes and cut inequality. It supports demand and human capital, but high taxes can weaken incentives, transfers cost money and a minimum wage set too high may reduce formal jobs.

Merit goods. Education programmes and health programmes raise human capital. Infrastructure, namely energy, transport, telecommunications, clean water and sanitation, lowers firms’ costs and improves health. The returns are large but slow, and the up-front cost is high.

Inward foreign direct investment (FDI). A foreign firm builds a plant in Brevane costing 800 million brevs. It employs 2,000 workers at 5,000 brevs each, a wage bill of 2,000 x 5,000 = 10 million brevs a year. Profit is 90 million and 70% is sent home, which is 63 million, leaving 27 million in the country. Benefits are jobs, capital, skills and technology; costs are profit outflows and a risk of dependence on the firm.

Foreign aid. Humanitarian aid meets emergencies; development aid funds long-term projects. Official Development Assistance (ODA) is government aid to developing countries. NGOs are non-profit groups that run projects directly. Debt relief cancels or reduces debt. If Quillon’s debt service falls from 0.9 to 0.6 billion, the ratio falls from 30% to 0.6/3.0 = 20%, and the 0.3 billion freed could lift the 0.9 billion education budget by 33.3%, to 1.2 billion. Limits of aid: it may be tied to donor goods, create dependence or be lost to corruption.

Multilateral development assistance. The World Bank lends and gives technical help for development projects. The International Monetary Fund (IMF) lends to governments facing balance of payments problems and gives policy advice; its loans often come with policy conditions, which critics say can limit a government’s choices.

Institutional change. Improved access to banking, including microfinance (small loans and savings for poor borrowers) and mobile banking (payments by phone). Example: in the fictional country Sarkova a seamstress borrows 300 units at 12% a year to buy a sewing machine, adding 40 units a month.

Interest = 300 x 0.12 = 36 a year
Extra income = 40 x 12 = 480 a year
Left after interest and repaying the 300 = 480 - 36 - 300 = 144

Other changes: increasing women’s empowerment, reducing corruption, and secure property rights and land rights. These lower risk and let people invest. Limits: change is slow and rules need enforcement.

Evaluating strategies and the role of government

The guide asks for strengths and limitations, and for intervention against market-oriented approaches. A balanced argument could run like this.

• Market-oriented: efficiency, competition, FDI and lower fiscal cost. But markets under-supply merit goods, ignore equity and may fail without sound institutions.
• Intervention: can fund education, health and infrastructure and reduce inequality. But governments may lack capacity, face corruption and pick the wrong industries.
• Judgement: the best mix depends on the country’s institutions, the barrier targeted and the time frame.

For the Sustainable Development Goals, compare chosen countries on selected goals using data you are given or have researched, noting that progress differs by goal and starting points differ.

Common errors

• Listing barriers without saying how each lowers growth or development.
• Treating growth and development as identical.
• Calling aid, FDI or privatisation simply good or bad, with no strengths and limitations.
• Confusing the debt service ratio with the size of the debt.

Official syllabus

IB Diploma Programme Economics guide, first assessment 2022, published by the International Baccalaureate Organization (February 2020). This page covers sub-topics 4.9 and 4.10.