Ownership structure and hospital service costs and fees: A decomposition approach

This paper analyzes hospital characteristics that are associated with higher average costs and charges for venipuncture, computed tomography procedures (computerized axial tomography [CAT] scans), and electrocardiograms (EKG). Using data from a Medicare database, our results indicate that higher wages, larger hospital sizes, and greater service quality are associated with higher procedure costs, whereas system membership is generally associated with lower procedure costs. Blinder‐type decompositions, which are the main focus of this study, suggest (a) that venipuncture costs are about 17% to 19% lower at proprietary hospitals than at nonprofit or government hospitals, (b) CAT scan costs are about 6% to 12% lower at nonprofit hospitals than at proprietary and government hospitals, and (c) that EKG costs are about 3% lower at proprietary hospitals than at nonprofit or government hospitals. Lastly, large portions of each of these differences are found to be due to both differences in mean values of the hospitals' characteristics by ownership type and differences in the mechanism by which the hospitals' characteristics are transmitted to procedure costs.     

Measurement distortion and missing contingencies in optimal contracts

Summary Theory suggests that optimal contracts should include many contingencies to achieve optimal risk sharing. However, in practice, few contracts are as complex as theory suggests. This paper develops a model which is consistent with this observation. The lack of risk sharing results from the interplay of two factors. First, contingencies must be based on information produced by measurement systems, which may be manipulable. Second, when two parties to a contract meet, they often have incomplete information. The type of contract offered may reveal information about the party who proposes it. Different types of agents have different preferences over contingent contracts, because they have different abilities to manipulate the measurement system. These differences in preferences allow the parties to signal their types through the contracts they offer. Noncontingent contracts may be chosen in equilibrium because they are the only contracts which do not give any type an incentive to distort the measurement system and, hence, do not reveal information about the party proposing the contract.We have benefited from conversations with Oliver Hart, Rick Lambert, Michael Riordan and Jean Tirole and the comments of Michel Habib, Nick Yannelis and two anonymous referees. Financial support from the National Science Foundation under grants SES-8920048 and SES-8720589 is gratefully acknowledged.     

Taxing transactions in futures markets: Objectives and effects

In the last few years various legislative proposals have been made to impose a transaction or excise tax on securities and derivative market transactions. Although there have been considerable discussion and analysis of the wisdom of imposing such a tax on securities markets, there has been no analysis of the pros and cons of extending the tax to futures markets. This article attempts to fill this gap, first, by examining the various rationales advanced to support a tax on securities markets to determine their applicability to futures markets and, second, by analyzing the likely effects of the tax on the competitiveness and efficiency of futures markets. In addition, the revenue-raising potential of a tax on futures transactions is evaluated. I conclude that a tax on futures markets will not achieve any important social objective and will not generate much revenue.     

From 'static' gold to the floating dollar

In this paper we discuss some features of the balance of paymentsposition of the country that issues the key currency under differentinternational monetary standards. The analysis takes a Sraffian‘standpoint’, where the monetary rate of interestof the central country is seen as an independent policy variable.The critical analysis of the theories and experiences of earlierstandards helps us to understand the current ‘floatingdollar standard’ in which the US economy becomes completelyfree of any balance of payments constraint.     

E-Finance: An Introduction

E-finance is defined as “The provision of financial services and markets using electronic communication and computation”. In this paper we outline research issues related to e-finance that we believe set the stage for further work in this field. Three areas are focused on. These are the use of electronic payments systems, the operations of financial services firms and the operation of financial markets. A number of research issues are raised. For example, is the widespread use of paper-based checks efficient? Will the financial services industry be fundamentally changed by the advent of the Internet? Why have there been such large differences in changes to market microstructure across different financial markets?     

Credit risk transfer and contagion

Some have argued that recent increases in credit risk transfer are desirable because they improve the diversification of risk. Others have suggested that they may be undesirable if they increase the risk of financial crises. Using a model with banking and insurance sectors, we show that credit risk transfer can be beneficial when banks face uniform demand for liquidity. However, when they face idiosyncratic liquidity risk and hedge this risk in an interbank market, credit risk transfer can be detrimental to welfare. It can lead to contagion between the two sectors and increase the risk of crises.     

More is More: Some Economics of Distinctively-Named White Kids

Using data covering every child born in California from 1961 to 2000, Fryer and Levitt (2004) find that in the 1960s, the differences in name choices by blacks and whites were relatively small, but that a profound shift began among blacks in the mid-1970s toward more distinctively black names, especially among blacks in racially isolated neighborhoods. As an extension of Fryer and Levitt (2004), this study uses data on the names of about 1,300 white children born over the four-year period from 1997 to 2000 and living in a segment of a Metropolitan Statistical Area in the Deep South, and finds that use of combination first names—largely based on combinations of single names included among the names of high-end white children from Fryer and Levitt (2004) and Levitt and Dubner (2005)—is significantly more prevalent among high-end white children than it is among low-end white children. Unlike the data described in Fryer and Levitt (2004), which support an Identity Model wherein distinctively black names result from the Black Power movement that encouraged blacks to “accentuate and affirm black culture and fight the claims of black inferiority,” the present study suggests that high-end parents may use the combination first name convention to increase the likelihood of the child’s future success in various partnership markets, such as dating, marriage and business-partnership markets.     

Unspoken demands for farm technology

For three years in Bolivia (2002–2005) the INNOVA Project finished researching several technologies for sustainable agriculture, started by earlier DFID-funded projects. Before INNOVA started critics suggested that these technologies should be discarded in favour of a demand survey. Instead, INNOVA kept the existing technologies, but judged the demand for them with several methods (CIAL, sondeo technology fair, and others). INNOVA found that there was demand for some of the technologies, but that a survey would have missed much of the demand, which is implicit. That is, people are not initially aware of all their problems or of all the possible solutions. Over the years, farmers made more specific, sophisticated demands on the technologies, which evolved as a result. Demand and supply of farm technology are like two sides of an unfolding conversation.