This work investigates the fundamental conceptual frameworks and practical methodologies required to accurately measure economic inequality within a society. Amartya K. Sen, a Nobel laureate in Economics, and James E. Foster, a prominent scholar in welfare economics, provide a rigorous analysis of how different mathematical and philosophical approaches shape our understanding of wealth distribution. The text evaluates various indices of inequality, scrutinizing the underlying assumptions and statistical requirements inherent in each model to determine their validity in economic policy.

Experts recognize this text as a foundational contribution to the field of welfare economics and distributive justice. Readers frequently note the academic density of the prose, which requires a strong background in economic theory and quantitative analysis to fully appreciate the authors' arguments.