study of PPP-adjusted estimates of GDP around the world between 1992 and 2010. First, we find that while market exchange … optimal. Using data from the Penn World Tables, we find that, indeed, it is optimal to only use the latest price data, and …

goods within countries, much of which makes economic sense. Theory looms large in our survey, providing interpretation and … and interpret gravity theory properly and to handle aggregation appropriately …

We estimate the world distribution of income by integrating individual income distributions for 125 countries between … hosted 11% of the world's poor in 1960. It hosted 66% of them in 1998. We estimate nine indexes of income inequality implied … by our world distribution of income. All of them show substantial reductions in global income inequality during the 1980s …

person in the world. We then estimate the gaussian kernel density function for the worldwide distribution of income. We … compute world poverty rates by integrating the density function below the poverty lines. The $1/day poverty rate has fallen …

Penn World Tables and of the World Development Indicators better estimate true income per capita. We find that revisions of …-price series in both PWT 8.0 and PWT 8.1, the two most recent vintages of the PWT. We additionally find that the World Development … Indicators are as good, and often better, measures of unobserved true income as are any recent vintages of the Penn World Tables …

competitive world economy. Our method is novel. The effect of border barriers on trade flows is often inferred from gravity models …

border. We show that the gravity model usually estimated does not correspond to the theory behind it. We solve the 'border … puzzle' by applying the theory seriously. We find that national borders reduce trade between the US and Canada by about 44 …