"The authors develop an endogenous growth model that combines structural change with repeated product improvement. That is, the technologies in one sector of the model become not only increasingly capital-intensive, but also progressively productive over time. Application of the basic model to...

"Aid is expected to promote better living standards by raising investment and growth. But aid may also affect institutions directly. In theory, these effects may or may not work in the same direction as those on investment. The authors examine the effect of aid on economic institutions and find...

"The authors examine the empirical evidence in support of the poverty trap view of underdevelopment. They calibrate simple aggregate growth models in which poverty traps can arise due to either low saving or low technology at low levels of development. They then use these models to assess the...

Not surprisingly, extreme negative export price shocks reduce growth. But these adverse effects can be mitigated through offsetting increases in aid. Indeed, targeting aid to countries experiencing negative shocks appears to be even more important for aid effectiveness than targeting aid to...

Some observers have questioned the rationale for continued engagement by international development institutions in middle-income countries. But these countries face development challenges calling for continued partnership with the international development community. Moreover, partnership with...

The authors analyze sectoral growth in Ecuador using multivariate cointegration analysis. They find significant long-run relationships between the agricultural industrial and service sectors. Moreover, they are able to derive dynamic sector models that combine the short-run links between the...