DEFAULT RISK AND DIVERSIFICATION: THEORY AND EMPIRICAL IMPLICATIONS

Recent advances in the theory of credit risk allow the use of standard term structure machinery for default risk modeling and estimation. The empirical literature in this area often interprets the drift adjustments of the default intensity's diffusion state variables as the only default risk premium. We show that this interpretation implies a restriction on the form of possible default risk premia, which can be justified through exact and approximate notions of "diversifiable default risk." The equivalence between the empirical and martingale default intensities that follows from diversifiable default risk greatly facilitates the pricing and management of credit risk. We emphasize that this is not an equivalence in distribution, and illustrate its importance using credit spread dynamics estimated in Duffee (1999) . We also argue that the assumption of diversifiability is implicitly used in certain existing models of mortgage-backed securities.     

THE BLACK-SCHOLES EQUATION REVISITED: ASYMPTOTIC EXPANSIONS AND SINGULAR PERTURBATIONS

In this paper, novel singular perturbation techniques are applied to price European, American, and barrier options. Employment of these methods leads to a significant simplification of the problem in all cases, by reducing the number of parameters. For American options, the valuation problem is reduced to a procedure that may be performed on a rudimentary handheld calculator. The method also sheds light on the evolution of option prices for all of the cases considered, the results being particularly illuminating for American and barrier options.     

Economic Perspectives on Health Information Technology

It seems paradoxical that health care spending and examples of inferior health care have been rising rapidly at the same time. An important factor is the slow pace at which the health care system has adopted information technology (IT). This paper discusses the dimensions of the problems that could be mitigated by effective use of IT in the health care system, their consequences, and their potential solutions. It also discusses the economic and institutional barriers to deploying IT and how the inherent economies of scale in IT are likely to lead to new problems of competition within the health care system. Inasmuch as this paper was based on an address followed by a question-and-answer period, it also includes an edited version of the recorded questions and answers.JEL Classification I180, I190     

John Landers. The Field and the Forge: Population, Production, and Power in the Pre-industrial West. Oxford, U.K.: Oxford University Press, 2003. xiii + 440 pp. ISBN 0-19-924916-4, {pound}60.00 (cloth); 0-19-927957-8, {pound}22.50 (paper).

This book recalls literature that emanated from the Annalesschool of historians, for, like the annalistes, Landers is fascinatedby the longues durées of history. His subject is preindustrialEurope from roughly the second century (with occasional forays back to the Iron and Bronze Ages) to the nineteenthcentury . He takes his thesis from E. A. Wrigley: preindustrial Europe relied overwhelmingly on organicsources for food, heat, energy, crafts, manufactures, commerce,and the means     

Coca‐Cola's marketing challenges in Brazil: The tubaínas war

This case presents the challenges the Coca‐Cola Company faces in Brazil. Not only is Coke up against its nemesis, Pepsi, but it must also compete with hundreds of local brands, many of which do not pay taxes. These local brands are generically called tubaínas. The case provides background information on the history of Coke in Brazil, trends in the Brazilian soft drink market, and competition by Pepsi and the many local soft drink firms. In addition, Coke's strategies for competing are outlined. The main question raised by the case is what marketing strategies can Coke adopt to better compete in Brazil. © 2005 Wiley Periodicals, Inc.     

The internationalization journey of a high‐tech cluster

We examine the internationalization processes of a sample of photonics companies, using in‐depth interviews conducted with twenty‐two CEOs. The texts of these interviews were appraised by using content analysis, combined with a grounded theory approach. In this way, the internationalization theory was critiqued and some insights developed into the international strategy process. Some salient findings emerged, such as that cluster externalities had a positive impact on the internationalization of firms within the cluster, and the degree of strategic vulnerability that cluster firms faced from developing‐country competitors. These findings are discussed in relation to their research and managerial implications. © 2005 Wiley Periodicals, Inc.     

The Born-Global Phenomenon: A Comparative Case Study Research

This qualitative, case-based research investigates the most relevant traits shown by several new, export-involved born-global firms and their entrepreneurs-managers versus other more traditional and also recently-established exporting SMEs in a specific geographic region inside Spain. More concretely, we aim to shed light on the type of factors and specific conditions underlying the emergence and further expansion of born-global exporters, as compared to other counterparts, which do not share their rapid internationalising character from inception. From our cross-comparison of four firm cases investigated in this setting against a number of factors generally associated with the born-global or gradual internationalisation paths, our results indicate that both constitute two consistent and distinctive patterns of international development. Another relevant finding in this research is that born globals seem indeed to be more entrepreneurial regarding their export entry behaviour into foreign markets than gradual exporters. Relevant academic, managerial, and policy-making implications are also outlined from these results.     

An Empirical Investigation Into the Effect of Music Downloading on the Consumer Expenditure of Recorded Music: A Time Series Approach

The downloading of music from the internet has been proliferating over the past three years. The recording industry believes that this phenomenon is responsible for the decline in recorded music sales since the year 2000, and to a certain extent this is supported by consumer surveys and previous studies that have used panel or cross-sectional data. In this analysis, an econometric, time-series model of consumer spending on tapes, LPs, and CDs is estimated which takes into account factors that are posited as effecting the consumption of recorded music, but not used in previous studies. The most significant finding is that music downloading, subsequent to 2000, affects consumer spending on tapes, LPs, and CDs through the price elasticity of demand. Falling DVD prices have also served to reduce the demand of recorded music during this same period.     

Moral Reasoning in Computer-Based Task Environments: Exploring the Interplay between Cognitive and Technological Factors on Individuals’ Propensity to Break Rules

This study examines the relationship between cognitive moral development (CMD), productivity features of information technology (IT) and unethical behavior or misconduct. Using an experimental design that randomly assigns subjects to one of four unique technology conditions, we assess the relationship between a subjects?? predominant level of CMD and ethical misconduct on IT-oriented work tasks. Our results show that both higher levels of CMD and increased levels of IT productivity features at one??s disposal have a significant role to play in explaining observed behavior in our sample. We find that CMD as measured by the Defining Issues Test??s P-score is negatively related to task misconduct. Conversely, IT productivity features such as copy-and-paste are positively related to task misconduct. In addition, the CMD??misconduct relationship is significantly diminished by the introduction of IT productivity features. Lastly, a series of hazard analyses are conducted to explore the boundaries of our principal findings. These results demonstrate the significant role of technology in enabling negative behavior and the relative inability of subjects?? use of principled moral reasoning to overcome it. Implications of these findings for academics and business managers are offered, as well as recommendations for mitigating misconduct in both academic and workplace environments.