I discuss the measurement of world poverty and inequality, with particular attention to the role of purchasing power parity (PPP) price indexes from the International Comparison Project. Global inequality increased with the latest revision of the ICP, and this reduced the global poverty line...

We consider two happiness puzzles. First, many studies show that only relative income matters for well-being. Yet the Gallup data for the United States and from the rest of the world show no such result, at least for life evaluation. There may be relative income effects in hedonic well-being...

This paper develops and implements a method for estimating price elasticities of demand using cross-sectional household survey data. Geographically clustered households report unit values, which when corrected for quality effects and for measurement error, indicate the underlying spatial...