Increasing evidence suggests that the level and distribution of cognitive skills is more important to economic development than absolute measures of schooling attainment, and that income and skill inequality are inextricably linked. Yet for most of the developing world no internationally...

Using a database of 76,046 empirical economics papers published between 1985 and 2005, we report two associations. First, research output on a given country increases with the country's population and wealth, yielding a strong correlation between per-capita research output and per-capita GDP....

Between 2000 and 2002, we followed 1621 individuals in Delhi, India using a combination of weekly and monthly-recall health questionnaires. In 2008, we augmented these data with another 8weeks of surveys during which households were experimentally allocated to surveys with different recall...