Poor Economics: A Radical Rethinking of the Way to Fight Global Poverty

Citation

Banerjee, A. V., & Duflo, E. (2025). Poor Economics: A Radical Rethinking of the Way to Fight Global Poverty (revised ed.). PublicAffairs.

Chapter Summary

This is a trade book for general readers, not a textbook, and it is written by two economists who share the 2019 Nobel Prize in Economics. Abhijit Banerjee is the Ford Foundation International Professor of Economics at the Massachusetts Institute of Technology, and Esther Duflo is the Abdul Latif Jameel Professor of Poverty Alleviation and Development Economics there. The book was first published in 2011 and won the Financial Times and Goldman Sachs Business Book of the Year. The revised edition, issued by PublicAffairs in September 2025 as a 400-page paperback, is described by the publisher as updated with significant new material based on the last decade of research, and other publisher pages say it adds two new chapters. The publisher does not list the chapters, so the summary below follows the questions and themes the publisher names and does not attribute content to particular chapters.

The Approach: From Grand Debates to Specific Questions

The book's premise is that the usual arguments about whether aid works, or whether markets or states should lead, are less useful than questions that can be tested. The authors draw on years of field research from around the world to ask what the lives and choices of poor people tell us about how to fight poverty. They show how even small design details of a programme can change its results, and they note that many of yesterday's magic bullets have become today's failed ideas, while a path forward still exists.

Everyday Choices of Poor Households

A large part of the book looks at how people living in poverty decide about food, health, schooling, family size, savings and work. The publisher frames these through puzzles: why the poor borrow in order to save, why they miss out on free life-saving immunizations but pay for unnecessary drugs, and why children from poor families attend school yet fail to learn anything. The method is to treat such behaviour as something to be explained by the circumstances and information people face.

Microfinance and Health Insurance

The authors investigate why microfinance is useful without being the miracle some hoped, and why the poor do not want health insurance. These are examples of the way the book tests popular ideas about poverty against evidence and finds results that differ from what might be expected.

Updates in the Revised Edition

The revised edition brings in insights from the last decade of research, including two new chapters. The publisher characterizes the book as a radical and hopeful rethinking of the economics of poverty, and an intimate view of the life of the poor around the world.

Key Concepts

The Method

• Randomized field experiments: tests of specific programme designs in real settings, which the book uses in place of general theories about aid.
• Small design details: the book's argument that particulars of how a programme is delivered can alter outcomes.

Household Decisions

• Borrowing to save: one of the puzzles the publisher names about how poor households manage money.
• Health choices: why free preventive care can be ignored while less useful treatment is bought.
• Schooling without learning: attendance that does not translate into learning.

Policy Ideas Tested

• Microfinance: useful, but not a miracle.
• Health insurance: an instrument that the authors say the poor do not want.

Critical Analysis

Strengths

• The book turns large policy arguments into specific, testable questions, which gives general readers a concrete way to think about poverty.
• It is written by two leading practitioners of the field experiments it describes, and it rests on years of field research around the world.
• The publisher and reviewers describe it as humane: the Financial Times calls it a "rich and humane" examination of how poor people actually live, and the New York Times notes its focus on what kind of aid works best.
• It assumes no economics and explains concepts as they arise, so it is accessible to readers who are new to the subject.

Limitations

• It is a book for a general audience and does not develop the formal models of a development economics textbook; readers who want theory and econometrics must look elsewhere.
• It argues from field research on particular programmes and households; a reader who wants a systematic account of growth, trade and structural change needs a development economics textbook alongside it.
• The revised edition's two new chapters are not itemized by the publisher, so a reader should check the contents of the edition in hand before relying on a specific chapter reference from the original 2011 book.

Where It Fits in the Course

In the development economics group this is the accessible, evidence-led entry point. Goldin's Development: A Very Short Introduction asks what development means and how it happens, from the viewpoint of policy. Todaro and Smith's Economic Development is a policy-oriented undergraduate textbook combining theory with evidence and country cases. Ray's Development Economics builds simple formal models and confronts them with evidence, and Bardhan and Udry's Development Microeconomics gives a concise graduate treatment of household, contract and market models in poor economies. De Janvry and Sadoulet's Development Economics: Theory and Practice is a graduate text that connects theory, evidence and the design of policy. Banerjee and Duflo suit best as a first read that shows what the empirical, household-level work looks like, before turning to those texts for models.

How to Use This Book

The book requires no economics, and suits general readers, first-year students and anyone who wants to understand the micro-level work that has shaped current thinking on poverty policy.

A good way to read it is straight through, since the argument builds from the method to the everyday decisions of households and then to programmes and institutions. Pause at each puzzle the publisher names, and try predicting the answer before reading the explanation. Students of development economics can pair it with Todaro and Smith for the broader context and with Ray or Bardhan and Udry for the models behind household behaviour. Use the revised edition if possible, because it incorporates a decade of later research.