This book investigates the core question of how economic theory and empirical evidence can be synthesized to effectively measure, understand, and alleviate global poverty. Martin Ravallion, a former Director of the World Bank's Research Department, utilizes his extensive background in development economics to construct a rigorous framework for analyzing poverty. He integrates historical data, statistical methodologies, and policy analysis to argue that poverty reduction requires a nuanced understanding of both individual incentives and systemic institutional constraints.

Experts recognize this work as a foundational text for students and practitioners of development economics. Readers frequently note the academic density of the prose, which provides a thorough and technical examination of the subject matter.