Recent developments in the theory of economic growth and dynamic trade theory are reviewed and interpreted. These include growth based on economies of scale, trade with product development, and product cycles. It is argued that there is need for more work in this area in order to understand the...

Evidence for the United States suggests balanced growth despite falling investment-good prices and less than unitary elasticity of substitution between capital and labor. This is inconsistent with the Uzawa Growth Theorem. We extend Uzawa.s theorem to show that introducing human capital...