The partial monopolization of the world oil market by the OPEC cartel has produced significant economic costs to the economies of the world. This paper reports estimates of the costs of monopolization of oil to the U.S. over the period 1972-1991. Two fundamental assumptions of the analysis are,...

The purpose of this publication is not to assess the causes of the 1973 energy crisis or the measures that were adopted to resolve it. The intent is to present some data on which such analyses can be based. Many of the trends presented here fall into two distinct periods. From 1973 to the...

It is well known that the Internet has significantly reduced consumers'search costs online. But relatively little is known about how searchcosts affect consumer demand structure in online markets. In this paper,we identify the impact of search costs on firm competition and marketstructure by...

Information systems and the Internet have facilitated the creation of used product markets that feature a dramatically wider selection, lower search costs, and lower prices than their brick-andmortar counterparts do. The increased viability of these used product markets has caused concern among...

We document that bid-ask spreads decrease substantially for stocks that moved from Nasdaq to the NYSE between 1996 and 2000, and that spread reductions continued to be observed after the 1997 market reforms. Somewhat surprising in light of these reforms, the largest spread reductions are for...

We test the effect of entry on the tariff choices of incumbent cellularfirms. We relate the change in the breadth of calling plans between1996, when incumbents enjoyed a duopoly market, and 1998, whenincumbents faced increased competition from personal communicationsservices (PCS) firms. Entry...

We examine the evolving structure of the U.S. hospital industry since 1970, focusing on how ownership form influences entry and exit behavior. We develop theoretical predictions based on the model of Lakdawalla and Philipson, in which for-profit and not-for-profit hospitals differ regarding...

We examine the evolving structure of the U.S. hospital industry since 1970, focusing on how ownership form influences entry and exit behavior. We develop theoretical predictions based on the model of Lakdawalla and Philipson, in which for-profit and not-for-profit hospitals differ regarding...

In this thesis, we develop a SKU level market basket model and apply the model to investigate cross-category reference price effects. This research extends previous work on the category-level multivariate logit model (Russell and Petersen 2000). Our model is a generalization of the multivariate...

This dissertation consists of two theoretical papers on market-based environmental policy. The first paper exploits the correlation between the environmental performance of firms and their economic performance to show that financial markets can be used to help enforce environmental policy and to...