While patent systems have been widely used both historically and internationally, there is nonetheless a tremendous amount of controversy over whether patent systems – in practice – improve the alignment between private returns and social contributions. In this paper, I describe three...

Although patent systems have been widely used both historically and internationally, there is nonetheless a tremendous amount of controversy over whether patent systems, in practice, improve the alignment between private returns and social contributions. In this article, I describe three...

Many US federal agencies model the economic and budgetary effects of research and development (R&D) investments -- both public R&D and private R&D -- as if R&D were the same as any other form of investment, such as physical capital investment. However, in recent decades a broad base of evidence...

We estimate the effect of current location on elderly mortality by analyzing outcomes of movers in the Medicare population. We control for movers' origin locations as well as a rich vector of pre-move health measures. We also develop a novel strategy to adjust for remaining unobservables, based...

We estimate the effect of current location on elderly mortality by analyzing outcomes of movers in the Medicare population. We control for movers' origin locations as well as a rich vector of pre-move health measures. We also develop a novel strategy to adjust for remaining unobservables, based...

Where the state is weak, traditional authorities often control the local provision of land, justice, and public goods. These authorities are criticized for ruling in an undemocratic and unaccountable fashion, and are typically quite old and poorly educated relative to younger cohorts who have...