This paper looks at the outsourcing of research and development (Ramp;D) activities. We consider cost reducing Ramp;D and allow manufacturing firms to decide whether to outsource the project to research subcontractors or carry out the research in-house. We use a principal-agent framework and...

We measure the responsiveness of returns to capital invested in six U.S. industries to shocks to the prices of competing import goods. Recognizing that most capital services are not traded on spot rental markets, we treat the intersectoral mobility of capital as the outgrowth of investment...

We study the interaction between productive and nonproductive savings in an economy that grows in the long run due to endogenous improvements in labor productivity. As in the neoclassical growth setting with overlapping generations studied by Tirole (1985), asset bubbles can exist in an economy...