Assessing the contribution of public capital to private production: Evidence from the German manufacturing sector

Using time-series cross-section data from the manufacturing sector of the 11 West German 'Bundesländer' (Federal States) from 1970 to 1996, I examine the impact of public capital on private production. My econometric analysis explicitly takes into account four of the most frequent specification issues in the context of time-series crosssection data analysis: serial correlation, groupwise heteroscedasticity, cross-sectional correlation and non-stationarity of data. For all approaches and tested specifications, I find that public capital is a significant input for production in the manufacturing sector. Moreover, I find that differences in public capital endowment can explain long-term differences in productivity across the Bundesländer. One tentative conclusion that can be drawn from this finding is that differences in public capital endowment might also explain a part of the still-existing productivity gap between manufacturing in East and West Germany. However, I emphasise that the existence of positive effects of public capital on private production is a necessary, but not a sufficient condition for concluding that public investments should be boosted in the future.     

Factors Influencing NCQA Accreditation Decisions of HMOs

This paper describes how National Committee for Quality Assurance (NCQA) accreditation of a managed care plan can be used as a signal of plan quality. A model is then developed examining the factors affecting the probability that a plan will be accredited. Larger and older plans are more likely to be accredited. For-profit plans are also more likely to be accredited. Competition in the marketplace from other accredited plans increases the probability of a plan being accredited. The results indicate that plans that have lower costs of accrediting as proxied by size and age are more likely to be accredited.     

The Changing Rewards to Science: The Case of Biotechnology

Little is known about the form and or magnitude of compensation provided university-based scientists working on firm R&D. This is unfortunate, given the important role that university-based scientists play in R&D, and the growing literature concerning compensation and innovation. This paper sheds some light on these issues by examining the compensation of university-based scientists involved with 52 biotech firms that made an initial public offering between March of 1990 and November of 1992. Although the stock holdings of the university scientists are of particular interest, additional forms of compensation received by the scientists are also examined.We find that approximately 10 percent of the university-based scientists affiliated with these companies hold sufficient options or stock to require disclosure at the time of the public offering. A far larger proportion has an equity position in the firm. In many instances the scientists also receive consulting fees or salary from the firm and enter into licensing agreements with the firm. In addition to providing information concerning the compensation of university-based scientists, the empirical work suggests that the rewards to science can be significantly greater than previous work would suggest.     

WHAT DO WE KNOW ABOUT THE POLITICAL ECONOMY OF ECONOMIC POLICY REFORM?

The recent wave of democratization in developing countries andin formerly communist ones has sparked renewed interest in therelation between politics and economic adjustment. Adjustmentprograms, however well designed in a technical economic sense,are often politically difficult to launch and, once launched,to keep afloat. Success in implementing an adjustment programmay depend on a government's skill in generating political supportand holding off the opposition. This article explores the politicsof economic reform, drawing on country studies by politicalscientists and country specialists, the growing theoreticalliterature by economists, and the findings of a World Bank researchproject on the political economy of adjustment in new democracies.The article examines three broad clusters of variables: institutionalcharacteristics of the political system, aspects of the internaland external economy, and the design of the reform program.It also considers the relevance of political analysis for policymakersand for international financial institutions.