IB Economics SLUnit 4 — The Global EconomyPaper 1 & 2Core idea~9 min read
Political and Social Barriers
Two countries can sit side by side with the same soil, the same climate and the same minerals, and one grows while the other does not. The difference is usually not economics at all. It is courts, banks, land titles and who is allowed to hold power.
📘 What you need to know
The institutional framework is the set of rules a government runs: the legal system, the tax structure, the banking system and property rights.
Strong institutions create certainty, and certainty is what makes people invest, lend and start businesses.
Poor governance and corruption leak money out of development spending and push investors away.
Unequal political power — weak trade unions, rigid class systems — lets low wages and inequality persist.
Gender inequality keeps half the workforce out of paid work, which is a straight loss of output for the whole economy.
These barriers are not a substitute for the economic ones. They sit on top and make every economic barrier worse.
Why institutions decide everything else
Imagine you have saved enough to open a small workshop. Before you spend a penny you ask yourself three questions. If someone steals my stock, will a court help me? If I make a profit, will a tax official demand a bribe? If I need to borrow, is there a bank that will lend to me? If the answer to any of those is no, you keep your money under the mattress.
Multiply that decision by millions of households and firms and you can see why institutions matter so much. They do not produce anything themselves. What they do is make it safe to produce.
Institutions sit between a country’s resources and its output. Good ones let resources be used; bad ones leave them idle.
The institutional framework, part by part
Institution
What it should do
What goes wrong without it
Legal system
Enforce contracts, protect property, set clear boundaries for households and firms.
Nobody signs a deal they cannot enforce. Foreign investors stay away and domestic firms stay small and informal.
Tax structure
Raise revenue fairly, usually through a progressive system that also reduces income inequality.
Weak collection means even a well-designed tax system raises very little, so there is no money for merit goods.
Banking system
Take deposits and lend them to households and firms who want to invest.
Savings never reach the people with ideas. The investment box in the poverty cycle stays empty.
Property rights
Give households legal ownership of land and buildings that can be used as security for a loan.
A family may farm the same land for generations and still own nothing on paper, so they can never borrow against it.
The banking and property-rights rows come back in a big way in 4.10.5. If you understand why a land title is really a borrowing tool, microfinance and land reform will make instant sense later.
Weak governance and corruption
Good governance means decisions get made openly, money gets spent on what it was raised for, and officials can be held responsible. When that breaks down, two things happen.
First, money leaks. Tax revenue and aid go in at one end, and bribes, kickbacks and diverted funds take chunks out along the way. What reaches the school or the road at the far end is a fraction of what was raised. Second, spending goes to the wrong projects. Contracts are awarded to whoever paid or lobbied hardest, not to whoever would deliver the most development.
The pipe narrows because corruption is not one theft at the end. It is a small loss at every stage of the process.
Corruption also has a cost you cannot see. Firms that would have invested simply never turn up, so the lost output never appears in any statistic. That is why corruption scores matter so much to foreign investors.
Unequal political power and status
Wages are set by bargaining. Where workers can organise into trade unions, they have some power to push pay up and conditions along with it. Where union membership is low or unions are banned, employers set the terms, wages stay near the bottom and inequality widens.
A rigid class or caste system does something similar but slower. If the people who make the decisions are already comfortable, they have little reason to back reforms that would move wealth or opportunity towards anyone else. Growth that would shake the existing order tends not to get chosen.
Gender inequality
This one has the cleanest economics of the lot. If women face barriers to education, land ownership or paid work, then a large share of a country’s potential workers are producing far less than they could.
In production possibilities language, the country is inside its PPC because a resource is being wasted, and its PPC is also further in than it needs to be because that resource never gets developed. Household income is lower, so the poverty cycle keeps turning.
The gender inequality chain
fewer girls in school → lower female human capital → fewer women in paid work → lower household income → lower output and slower development
Any discrimination works the same way in economics: it stops the most able person getting the job, so output is lower than it could be. Gender is simply the example the syllabus names.
Putting it together: context is the answer
Every developing country has some version of these barriers, but the mix is different every time. A landlocked farming economy has a transport problem. A resource-rich country with weak courts has a governance problem. Naming the right two or three for the country in front of you is the whole skill.
🧩 How to attack a “barriers” question
Read the extract for clues first. Words like “landlocked”, “informal”, “one main export” or “election delayed” are the examiner telling you which barriers to use.
Pick two or three, ideally one economic and one political or social. Breadth without depth scores badly.
Chain each one through to lower growth or lower development. Cause, consequence, therefore.
Link back to the poverty cycle and say which box the barrier is blocking.
Finish with a judgement on which barrier matters most here, and say what it depends on.
Worked examples
WORKED EXAMPLE 1
Explain how weak property rights can limit economic growth. [4 marks]
Say what property rights do
Legal ownership of land or a home turns an asset into security for a loan.
Take it away
Without a title, a bank has nothing to claim if the loan is not repaid, so it will not lend.
Chain to growth
No loan → no capital purchased → investment stays low → output and growth stay low.
Add the development angle
Families also have no shelter security, so they will not improve a home they might be moved off.
Blocks the investment box in the poverty cycle
WORKED EXAMPLE 2
An extract describes a country with strong mineral wealth but a low ranking for control of corruption. Explain why growth may still be slow. [4 marks]
Resources are not enough on their own
Mineral wealth raises potential output but says nothing about whether the revenue is used well.
Leak 1: money diverted
Revenue intended for infrastructure and schools is siphoned off, so actual spending is far below the amount raised.
Leak 2: investors stay away
Firms facing bribes and unenforceable contracts invest elsewhere, so FDI is lower than the resource base would suggest.
Result
Human capital and infrastructure improve slowly, so growth stays below potential.
Institutions, not resources, are the binding barrier hereThe phrase “resource curse” is worth one clean sentence, not a paragraph.
💡 Exam tip
Political barriers are the easiest place to score application marks because extracts almost always mention governance, elections or corruption.
Use “certainty” as your keyword. Strong institutions create certainty; certainty attracts investment. That single link does a lot of work.
Do not moralise. Corruption is bad economics because it lowers the return on spending — that is the mark-earning reason.
Gender inequality has a PPC diagram waiting for it. A quick sketch showing a point inside the curve is fast and effective.
Say what the barrier depends on. “Corruption matters more when the government is the main investor” is a proper evaluative sentence.
Keep one line to acknowledge that institutions are slow to change — that is a great limitation for any policy answer.
⚠ Common mix-up
Institutions are not buildings. They are the rules and the organisations that enforce them.
Corruption is not only theft of cash. Bad contracts, capture by big firms and wasted projects all count.
Government capture is not the same as corruption. Capture is influence over policy; corruption is misuse of funds. They often travel together.
Weak tax revenue is not always a weak tax system. A good progressive system still fails if collection and enforcement are poor.
Political barriers do not replace economic ones. The strongest answers connect the two: weak courts → no lending → low investment.
Do not claim institutions are the only thing that matters. Geography and disease do not care how good the courts are.
Up next: Trade and Market-Based Strategies — now that you know what is blocking the way, we start on the ways out, beginning with the ones that use markets rather than government spending.
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