The instantaneous capital market line

Summary. We show that if the intercept and slope of the instantaneous capital market line are deterministic, then investors will not hold any hedge portfolios in the sense of Merton [9, 11]. They will choose portfolios that plot on the capital market line, and they will slide up and down the capital market line over time as their wealth and risk tolerance change. This result allows us to aggregate over investors and derive a single factor CAPM where the first and second moments of security returns may change stochastically over time and markets are potentially incomplete.Received: 21 June 2004, Revised: 10 December 2004, JEL Classification Numbers: G11, G12.An earlier version of this paper was presented at the Econometric Society Meeting in Pasadena (1997) under the title “Portfolio selection and asset pricing with dynamically incomplete markets and time-varying first and second moments”.     

Withholding taxes or information exchange: the taxation of international interest flows

This paper considers withholding taxes and information exchange as alternative means to tax international interest income. For each regime, we consider the maximum level of taxation of foreign-source income that can be sustained as the equilibrium of a repeated game. The best regime is the one that brings the level of taxation in the repeated game closest to the cooperative level of interest taxation. Sustainable levels of taxation in either regime depend on the importance of bank profits and on the marginal cost of public funds, among other things. Simulations with the model illustrate the choice between withholding taxes and information exchange. An explicit possibility is the emergence of a mixed regime, with one country imposing a withholding tax and the other country providing information. The basic model is extended to allow for size differences between the two countries and to incorporate a third, outside country.     

Mind the gap: the role of HRM in creating,capturing and leveraging rare knowledge in hostile environments

Abstract

Multinational enterprises (MNEs) have increasingly entered markets in less developed regions of the world afflicted with weak institutions and political conflict. Some are characterised by ‘extreme’ cases of institutional voids and terrorism, creating a hostile environment for the organisation and its people. This in-depth qualitative study of a service company, a European telecommunications joint venture in Afghanistan, seeks to shed light and build theory on the human resource management (HRM) dimension of managerial learning and knowledge acquisition in hostile environments, as part of the MNE’s organisational learning process. Specifically, we investigate how knowledge gaps can be addressed through supportive HR practices, and how knowledge classified as ‘rare’ can be captured and leveraged through HR interventions such as debriefing. We stipulate that HR practices and interventions adapted to hostile environments, together with expatriate willingness to learn and share new knowledge, play a critical role in the creation, capturing and leveraging of rare knowledge for subsequent use by the MNE in other hostile locations. The study has implications for international HRM and organisational resilience, under the proposition that competitive advantage can be gained through exploitation of rare knowledge acquired in hostile environments.     

Eco-labels, Trade and Protectionism

Eco-labels are suspected to serve protectionist purposes. We analyze the choice between an environmental standard and a voluntary eco-label scheme in a partial trade model with one domestic firm and one foreign firm. The environmental standard will only apply to the domestic firm, while both firms can adopt the eco-label. Pollution is production related, and domestic consumers demand products that are produced in an “environmentally friendly” way. Our results show that it may be optimal for the domestic government to introduce an eco-label and get both firms to adopt the label, instead of setting an environmental standard. However, to what extent this policy serves protectionist purposes is ambiguous. In particular, if the willingness to pay for green products is sufficient to cover the pollution abatement costs of the foreign firm, foreign firm profit will increase while domestic firm profit will decrease compared to the outcome with a domestic environmental standard. On the other hand, if the willingness to pay for green products is insufficient, the foreign firm would be better off with a domestic environmental standard.     

Tax policy, venture capital, and entrepreneurship

The paper studies the effects of tax policy on venture capital activity. Entrepreneurs pursue a single high risk project each but have no own resources. Financiers provide funds, covering investment cost plus an upfront payment, in exchange for a share in the firm. The contract must include incentives to enlist full effort of entrepreneurs. Venture capitalists also assist with valuable business advice to enhance survival chances. The paper develops a general equilibrium framework with a traditional and an entrepreneurial sector and investigates the effects of taxes on the equilibrium level of managerial advice, entrepreneurship and welfare. It considers differential wage and capital income taxes, a comprehensive income tax, progressive taxation as well as investment and output subsidies to the entrepreneurial sector.     

Getting value for money from your science park

Based on 34 semi-structured interviews covering 25 university–industry collaborations (UICs) at science parks attached to Danish and Norwegian universities, this paper focuses on aspects of value creation and how to measure the performance of UICs. The research findings have resulted in a set of relevant performance measures for the UICs that have the potential to become levers of management for the modern-day university seeking to enhance the pay-off from its third core (mission) activities.     

Ulrich Beck: exploring and contesting risk

Abstract

While risk research normally understands risk as an entity that can be calculated using statistics and probabilities – and which therefore also can become the object of insurance technology – it is the production of new, non-calculable risks and therefore also risks that cannot be insured against, which is at the centre of Ulrich Beck’s risk society theory. The article examines Beck’s conceptualization of risk and discusses how he has clarified and further refined the concept since publishing Risk Society in 1986. The article shows, first, how Beck understands risk as an entity that is neither danger nor risk in the traditional sense but rather something in between, which he refers to as ‘man-made disasters’ and ‘new risks’. The discussion then addresses Beck’s position in relation to the ontological status of risk, which is an intermediate position between realism and constructivism. The non-calculability and non-insurability of the new risks are also examined. The article discusses what it means that the new risks are not visible and the significance of non-knowledge for how we understand them. Finally, the new conditions of existence for politics, states and individuals are outlined in the aftermath of Beck’s risk society theory. The article concludes with a discussion of the analytical potential of the theory.     

Non-stationary,stable Markov processes on a continuous state space

We extend our previous result on simple stable Markov (SSM) processes to the case where the state space is continuous. As anapplication we show the existence of a competitive general equilibrium of a cobweb model where price volatility is generated both by exogenous shocks and by stochastic, so called generating variables (that may be interpreted as sunspots) that govern the correlation of the rational beliefs of individual agents. I would like to thank Danish Social Science Foundation, The Carlsberg Foundation, Stanford Institute for Theoretical Economics (SITE) and Universita Cattolica for financial help. I would also like to thank Trinidad Casasus, Mordecai Kurz, an anonymous referee as well as participants at SITE, ESAM (2004) and ESEM (2004) for helpful discussions and comments. Peter Harremoes provided me with an illuminating counter example and Hiro Nakata provided many comments that helped improve the exposition of the paper. Part of this work is from a paper previously circulated under the title: “Sunspot rational belief structures: anonymity and endogenous uncertainty”.     

Genetic Testing and the Demand for Cancer Insurance

There has been an expansion of the availability of disease-specific insurance policies in the United States over the past decade. At the same time, recently developed medical tests are providing consumers with new information regarding their risk of contracting particularly serious diseases. This exploratory study makes use of data from two groups of women to examine the demand for one type of disease-specific policy, cancer insurance. Members of the first group have been tested for a BRCA1 gene mutation that is associated with an 88% risk of contracting breast and/or ovarian cancer by age 70. The other group consists of women from the general population who have not been tested for any BRCA1 gene mutation.The study results indicate that women who have been tested for the BRCA1 gene mutation are more likely than untested respondents to have purchased cancer insurance and to have recently thought about purchasing cancer insurance. The results also indicate that older women and women who have modest household incomes are more likely to have purchased cancer insurance. Women who have minor children, who are more highly educated, who have no health insurance, who have had cancer, or who report that they are in poor health are more likely to have recently contemplated purchasing cancer insurance. Our discussion of the findings highlights several issues that merit further consideration on the part of consumer policy makers working in the area of insurance regulation.     

How Sensitive is the Demand for Primary Education to Changes in Economic Factors?

During the recession in the 1970s and 1980s in less-developedcountries in general and in Zambia in specific, private costsof schooling increased and school quality deteriorated. Combinedwith poverty, these changes may have damaged the demand forprimary education. This observation motivated a study of therelationship between economic variables and the demand for primaryeducation. A binary choice model for the school enrolment decisionis estimated, and the relevance of economic incentives concerningthe decision to enrol in school is tested directly. Economicincentives to enrol in school are reflected in household income,educational expenses and quality indicators, and the resultsshow that they all affect school enrolment as expected, eventhough the magnitudes of the effects are relatively moderate.