Barriers to Development and the Poverty Cycle: IB 4.9

The poverty cycle (how to draw it in words)

Draw the poverty cycle as a loop of four or five boxes joined by arrows that return to the start. Begin at low incomes, which lead to low savings (little is left after consumption), which lead to low investment in physical and human capital, which leads to low productivity, which leads back to low incomes. The arrows form a closed circle to show the trap is self-reinforcing.

The economy stays stuck unless an external injection breaks the loop: aid, foreign direct investment, or government investment funded from elsewhere. This is the savings-gap idea (linked to the Harrod-Domar model): low saving means low capital accumulation and therefore low growth. A parallel loop runs through the public sector: low incomes give low tax revenue, which gives poor health and education services, which gives low human capital, which returns to low incomes.

The informal economy

The informal sector is unregistered, untaxed activity such as street vending, subsistence farming and casual labour. In many developing economies it is 30 to 60 percent of output, so it is not a fringe.

It slows development in several ways. The tax base is narrow, so governments have less revenue for infrastructure and services. Workers have no legal protection and little access to formal credit, and output is undercounted in GDP, which understates the true size of the economy.

Dependence on primary commodities

Relying on a few primary exports such as oil, cocoa or copper exposes an economy to volatile world prices and to weather shocks, making government revenue and export earnings unstable. The Prebisch-Singer hypothesis argues that the long-run terms of trade for primary producers tend to decline relative to manufactures, so commodity exporters can fall behind over time.

Mineral wealth can also become a resource curse. Large resource exports can raise the exchange rate and squeeze other tradable sectors like manufacturing (Dutch disease), and resource revenues can fund corruption and conflict rather than broad development.

Capital flight and indebtedness

Capital flight is residents and firms moving their savings abroad, often to escape instability, a falling currency or taxation. It drains the pool of funds available for domestic investment, deepening the poverty cycle.

Heavy external debt means large repayments (debt servicing) that must be made in foreign currency, diverting money from health, education and infrastructure. A falling exchange rate makes dollar-denominated debt more expensive in local currency, which has triggered debt crises across parts of Africa and Latin America.

Political barriers: governance, corruption and conflict

Weak governance and corruption divert public resources, deter investment and raise the cost of doing business, because firms face bribes, delay and uncertainty. Poor institutions, such as unreliable courts and unstable policy, raise risk and lower long-term investment.

Armed conflict is among the most destructive barriers. It destroys physical capital, displaces people, halts schooling and can set development back by decades, with recovery taking a generation even after fighting ends.

Social barriers: gender, infrastructure and property rights

Excluding women from education, credit and formal employment wastes half the potential labour force. Educating girls tends to raise incomes and lower child mortality and fertility, so gender inequality is both an equity issue and a brake on growth.

Lack of infrastructure (roads, electricity, water, ports) raises firms' costs and cuts them off from markets. Insecure property rights are a subtler barrier: without legal title to land or assets people cannot use them as collateral for loans or invest with confidence, an argument associated with Hernando de Soto.

Real-world example

The Democratic Republic of Congo holds vast mineral wealth (cobalt and copper central to global batteries) yet has a low HDI. It shows several barriers combining: the resource curse, weak governance and corruption, decades of conflict, and capital flight, so mineral riches have not translated into broad development.

For a debt example, Zambia depends heavily on copper and defaulted on its external debt in 2020, illustrating how commodity dependence and indebtedness reinforce each other when prices fall.

Common Paper mistakes

Listing barriers with no links scores poorly. The mark scheme rewards showing how they interact, for example commodity dependence feeding volatile revenue, which feeds debt.

When you describe the poverty cycle, state clearly why it perpetuates itself and what could break it. Avoid treating all developing economies as identical; anchor the answer in one named country.

How this is examined

• On Paper 1 (Explain two barriers to development), draw or describe the poverty cycle as a labelled loop; a clear diagram plus a country example scores highly.
• Chain the barriers together (commodity dependence to volatile revenue to debt) rather than listing them; interdependence of causes is what top answers show.
• For evaluation, argue which barrier binds hardest for a specific country and why, rather than saying all matter equally.
• Keep absolute figures handy: the informal sector is often 30 to 60 percent of output, a strong data point for the informal-economy barrier.

Key terms

developing economynational debtgini coefficienteconomic growth