What development economics is all about -- What works and what doesn't? -- Income -- Poverty -- Inequality -- Human development -- Growth -- Institutions -- Agriculture -- Structural transformation -- Information and markets -- Finance -- International trade and globalization -- Epilogue.

Demand heterogeneity often makes it profitable for firms to price and promote goods and services differently in different market segments. When private consumption brings public benefits, this same heterogeneity can be used to target public subsidies. We explore the design of public–private...