A large body of evidence suggests that poor countries tend to invest less (have lower PPP - adjusted investment rates) and to face higher relative prices of investment goods. It has been suggested that this happens either because these countries have lower TFP in the investment - good producing...

A large body of evidence suggests that poor countries tend to invest less (have lower PPP adjusted investment rates) and to face higher relative prices of investment goods. It has been suggested that this happens either because these countries have lower TFP in the investment good producing...

A large body of evidence suggests that poor countries tend to invest less (have lower PPP-adjusted investment rates) and to face higher relative prices of in- vestment goods. It has been suggested that this happens either because these countries have lower TFP in the investment-good producing...

This paper studies optimal investment policies when the production function depends on capital of various vintages. In such an environment it is natural to ask whether the firm will invest in old-vintage capital at all. In this paper I derive such a condition. Predictably, investment in old...

This paper extends Lucas (1978) to a production economy with two capital goods. It is an RBC model in which each unit of investment requires a new idea, an "option". When options are scarce, new capital is harder to put in place and the value of old capital rises. Thus the stock market and...