Storable products allow consumers to time their purchases to exploit price fluctuations. It has been documented that during promotions consumers buy more. The additional purchases are potentially intended not only for current use, but to be stockpiled for future consumption. This paper discusses...

How should multilateral trade policy be designed in a world in which countries differ in terms of market access and technology, and firms with market power differ in terms of productivity? We answer this question in a model of monopolistic competition in which variable markups increasing in firm...

How can firms profitably give away free products? This paper provides a novel answer and articulates tradeoffs in a space of information product design. We introduce a formal model of two-sided network externalities based in textbook economics - a mix of Katz & Shapiro network effects, price...

The standard approach to identifying second degree price discrimination is based on examining correlations between product menus and prices. When product menus are endogenous, however, tests for price discrimination may be biased by the fact that unobservables affecting costs or demand may...

The Internet has dramatically reduced search costs for customers through tools such as shopbots. The conventional wisdom is that this reduction in search costs will increase price competition leading to a decline in prices and profits for online firms. In this paper, we provide an argument for...

Janssen and Rasmusen (2002) show that a Bertrand model with an uncertain number of firms has only one symmetric equilibrium, and profits in that equilibrium fit the empirical data in Bresnahan and Reiss (1991). However, unless its equilibrium is unique, Janssen and Rasmusen's model cannot be...

Despite the pervasive phenomenon of scale economies the majority of firms hasalways been small firms. The emergence of small firms as a means of economic development on both sides of the Atlantic has been one of the major new topics of economic policy since the 1980s. This has drawn renewed...

The purpose of this paper is to introduce a series of articles on the linksbetween innovation, the evolution of industry and employment. These relationsprovide the building blocks of a new industrial policy. The articles areincluded in Innovation, Industry Evolution and Employment published by...

This paper presents a simple model of airline schedule competition that circumvents the complexities of the spatial approach used in earlier papers. Consumers choose between two duopoly carriers, each of which has evenly spaced flights, by comparing the combinations of fare and expected schedule...

A manufacturer's incentives to undertake non-contractible investments depend on the profit margin on her sales to the retailer, and slotting allowances can facilitate such incentives by increasing unit wholesale prices. At first glance, it is tempting to conclude that slotting allowances should...