Poor Economics: 8 key ideas
The core ideas of Poor Economics, each in under a minute, written in our own words. Want the full depth? Get the book.
- IDEA 1 OF 8
Test poverty policies with experiments
Banerjee and Duflo argue that debates about poverty are often driven by big theories rather than evidence.
They favour randomised trials, which compare similar groups with and without a programme, to find out what actually helps poor families.
- IDEA 2 OF 8
Poverty traps exist only sometimes
The authors ask whether poor people are stuck in traps they cannot escape without outside help.
Their answer is that it depends on the case, so each problem needs careful study instead of one grand answer.
- IDEA 3 OF 8
More money, not more calories
The authors report that very poor people given extra money often buy tastier food, not simply more calories.
They argue that this reflects real human wants, such as variety and pleasure, rather than foolishness.
- IDEA 4 OF 8
Cheap prevention is often ignored
The authors describe how poor families often skip cheap preventive care, such as bed nets or clean water, while spending on costly treatments.
They link this to doubts, present bias and weak public health systems.
- IDEA 5 OF 8
Expectations shape schooling
The authors argue that parents often believe education pays off only if a child finishes school, so they invest in the child who seems most promising.
Low expectations can hold back learning for the rest.
- IDEA 6 OF 8
Microfinance helps, but modestly
The authors review studies of small loans for the poor.
They find these loans give families useful flexibility, but the effects on income and business growth are smaller than early supporters had claimed.
- IDEA 7 OF 8
Policies fail for simple reasons
The authors argue that many good programmes fail because of ideology, ignorance and inertia among the people running them.
Fixing small details of design and delivery, in their view, can make a large difference.
- IDEA 8 OF 8
Poor families carry huge risks
The authors show that poor households face constant risks from illness, weather and lost work, usually without insurance.
Managing this uncertainty, they argue, takes much of their energy and shapes many of their choices.
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