Profitability, as measured by gross profits-to-assets, has roughly the same power as book-to-market predicting the cross-section of average returns. Profitable firms generate significantly higher average returns than unprofitable firms, despite having, on average, lower book-to-markets and...

In principle, a multiproduct firm can set separate prices for all possible bundled combinations of its products (i.e., "mixed bundling"). However, this is impractical for firms with more than a few products, because the number of prices increases exponentially with the number of products. In...

This paper develops a framework to analyze the relationship between the diffusion of new technologies and the decentralization decisions of firms. Centralized control relies on the information of the principal, which we equate with publicly available information. However, the manager can use her...

This paper discusses the likely evolution of the trade and environment issue in the World Trade Organization after the upcoming ministerial meeting in Singapore this December. It makes a number of points. Progress within the GATT/WTO on this issue looks likely to be slow and painfully...

We study a growth model with an environmental asset which is a source of utility and an input to consumption and production. The stock of this asset follows its own ecological dynamics, which are affected by economic activity. We study the implications of an approach to ranking sequences of...

The relationship between economic growth and the environment is not well understood: we have only limited understanding of the basic science involved and very limited data. Because of these difficulties it is especially important to develop a series of relatively simple theoretical models that...

Traditional human capital theory emphasizes a worker's investment in knowledge. However, when a worker is faced with day-to-day problems on the job, the solutions to the problems often require more knowledge from a team of experts within the firm. When a worker taps into the knowledge of...

We study the problem of an investor who buys an equity stake in an entrepreneurial venture, under the assumption that the former cannot monitor the latter's operations. The dynamics implied by the optimal incentive scheme is rich and quite different from that induced by other models of repeated...

The existing literature on firms, based on incomplete contracts and property rights, emphasizes that the ownership of assets - and thereby firm boundaries - is determined in such a way as to encourage relationship-specific investments by the appropriate parties. It is generally accepted that...

The cleaning up costs after closure of chemical or nuclear plants are large. They have to be taken into account in the production costs and in the pricing of the corporate, owner of such plants. Moreover, it is necessary to create a reserve account to cover these future large and long term...