Robustness of the market model

Summary The market model specifies that the random vector of returns on risky assets is an affine function of the return on the market portfolio plus a residual which has zero conditional expectation given the return on the market. The model is important because of its intimate relation to distributional two-fund separation and the CAPM equation. This paper shows that the market model is robust to small changes in the asset supplies only if the distribution of returns is spherically generated.     

Fissures in the marketing strategies of South Asian restaurants in Edinburgh

This exploratory study sought to investigate South Asian restaurants in Edinburgh, Scotland, UK in order to obtain a preliminary identification of marketing gaps compromising their future profitability. The aims of the study were to expose and understand the relative importance attached by owners and managers of South Asian restaurants in Edinburgh to the different elements of the marketing mix. South Asian restaurants form a small but important sector of the restaurant in market in towns throughout the UK and are characteristically of disproportionate financial and social importance to the communities who run them. South Asian restaurants in Edinburgh, as in most towns in the UK, are run primarily by the Bangladeshi community and are under increasing pressure as the variety of restaurants operating in the sector increases. The results of the study make evident that any initiatives taken to support South Asian restaurants should include awareness‐raising actions. Building awareness, which is perceived to be currently partially understood, of the importance of studying markets, customers and competitors is essential before any advice is given on how to accomplish these monitoring tasks. Equally, a fundamental priority is to encourage self‐critical and proactive approaches to business, thus increasing the capacity to identify possible problems and implement correcting measures.     

Formula Apportionment and Transfer Pricing under Oligopolistic Competition

This paper demonstrates that under conditions of imperfect (oligopolistic) competition, a transition from separate accounting (SA) to formula apportionment (FA) does not eliminate the problem of profit shifting via transfer pricing. In particular, if affiliates of a multinational firm face oligopolistic competition, it is beneficial for the multinational to manipulate transfer prices for tax–saving as well as strategic reasons under both FA and SA. The analysis shows that a switch from SA rules to FA rules may actually strengthen profit shifting activities by multinationals.     

Limitations of ethical reasoning as an action (praxis) strategy

For both philosophers and managers, reasoning with ourselves and others can be used both as (1) a way of knowing what is ethical and (2) a way of acting to help ourselves, others and organizations behave ethically. However, for many of us, knowing is frequently not the same as acting. Four areas are addressed: (1) thirteen limitations of ethical reasoning as an action strategy; (2) how a better understanding of these limitations can strengthen ethical reasoning as an action strategy; (3) how an understanding of these limitations can serve as a conceptual foundation for exploring other ethical action strategies; and, (4) implications for experiential learning and teaching. Richard P. Nielsen is a Management Professor in the Department of Organizational Studies, School of Management, Boston College, Chestnut Hill, MA 02167. Related articles of his include Toward an Action Philosophy for Managers Based on Arendt and Tillich, Journal of Business Ethics, May 1984, What Can Managers Do about Unethical Management, Journal of Business Ethics, May 1987, and Cooperative Strategy, Strategic Management Journal 9, 1988.     

Parisian types of ruin probabilities for a class of dependent risk-reserve processes

For a rather general class of risk-reserve processes, we provide an exact method for calculating different kinds of ruin probabilities, with particular emphasis on variations over Parisian type of ruin. The risk-reserve processes under consideration have, in general, dependent phase-type distributed claim sizes and inter-arrivals times, whereas the movement between claims can either be linear or follow a Brownian motion with linear drift. For such processes, we provide explicit formulae for classical, Parisian and cumulative Parisian types of ruin (for both finite and infinite time horizons) when the clocks are phase-type distributed. An erlangization scheme provides an efficient algorithmic methods for calculating the aforementioned ruin probabilities with deterministic clocks. Special attention is drawn to the construction of specific dependency structures, and we provide a number of numerical examples to study its effect on probabilities.     

Fairness is intuitive

In this paper we provide new evidence showing that fair behavior is intuitive to most people. We find a strong association between a short response time and fair behavior in the dictator game. This association is robust to controls that take account of the fact that response time might be affected by the decision-maker’s cognitive ability and swiftness. The experiment was conducted with a large and heterogeneous sample recruited from the general population in Denmark. We find a striking similarity in the association between response time and fair behavior across groups in the society, which suggests that the predisposition to act fairly is a general human trait.     

Socioeconomic differences in public acceptability and car use adaptation towards urban road pricing

Urban road pricing is regarded as an effective instrument to reduce traffic congestion and environmental-related problems in metropolitan areas. Whereas the overall impact of urban road pricing on car use adaptation and public acceptability is known, there are only inconsistent results concerning the socioeconomic differences in the response towards road pricing. However, this knowledge is necessary for the development of urban road pricing packages. This paper uses a segmentation approach to identify groups of car users with a similar background in relevant socioeconomic variables and compares their responses towards road pricing. Three groups are identified: young families, suburban families, and singles and couples. These groups indeed differ in their car use adaptation towards urban road pricing as well as in their preferred revenues use. While all three groups significantly reduced their private car use, the young families reduced their car use most, followed by the group of singles and couples. Complementary measures are discussed that are believed to facilitate car use adaptation of each group in response towards urban road pricing.     

The EU public procurement regime— Does it work?

Has the Single Market for public procurement had the expected effects after six years in progress? The following article attempts to answer this question by first presenting alternative theoretical approaches to analysing the EU liberalisation of the public procurement market and then confronting these with the result of an empirical analysis.