Competition and productivity growth in South Africa

This article shows that mark‐ups are significantly higher in South African manufacturing industries than they are in corresponding industries worldwide. We test for the consequences of this low‐level of product market competition on productivity growth. The results of the paper are that high mark‐ups have a large negative impact on productivity growth in South African manufacturing industry. Our results are robust to three different data sources, two alternative measures of productivity growth, and three distinct measures of the mark‐up. Controlling for potential endogeneity of regressors does not eliminate the findings.     

Combining Risk and Responsibility Perspectives: First Steps

Business activity can be analyzed through a ‘risk awareness’ perspective and a ‘responsibility awareness’ perspective. However, risk and responsibility are actually interdependent. Risk-taking triggers responsibility issues and taking responsibility means risking being asked critical questions. This article suggests some first steps for combining these two perspectives conceptually. After several introductory illustrations showing how risk and responsibility issues are intertwined, the article looks separately each at risk and at responsibility. Then the argument that such perspectives could be usefully combined is elaborated further from a theoretical angle and from a practical angle, by looking at various ethical issues and by presenting paradigmatic examples of balancing or sharing risk and responsibility related to leadership, to ERM and to insurance.     

The limits of the wage impact of discrimination

In spite of almost 40 years of active enforcement efforts by the EEOC, as well as the strong intervention by the plaintiff bar, the most popular benchmark by which we measure the influence of prejudice on wages paid to female and minority workers has changed very little. This paper maintains that to a large extent this seeming immunity of discriminatory wage gaps to the legal remedies provided by Title VII results from the mismeasurement of those effects. An alternative to the standard Oaxaca decomposition of the wage gap is offered which allows us to put plausible ranges around the true impact of antidiscrimination laws. Not only does this reduce the residual impact of the discrimination that appears to withstand Title VII remedies, it also suggests that the pre‐Title VII impact of discrimination on wages accounted for little of the gap observed at the time of its passage. Copyright © 2005 John Wiley & Sons, Ltd.     

Promoting justice by treating people unequally: an experimental study

Which inequalities among individuals are considered unjust? This paper reports the results of an experiment designed to study distributive choices dealing with arbitrarily unequal initial endowments. In a three-person distribution problem where subjects either know or do not know their endowments, we find impartial behavior to be a stable pattern. Subjects either compensate for initial inequalities fully or not at all in both conditions, and they do so more often when they do not know their endowment than when they know it. Moreover, the type and the size of the good to be distributed also affect the frequency of impartial behavior.     

Luther and the Girls: Religious Denomination and the Female Education Gap in Nineteenth‐century Prussia*

Martin Luther urged each town to have a girls' school so that girls would learn to read the Gospel, thereby evoking a surge of building girls' schools in Protestant areas. Using county‐ and town‐level data from the first Prussian census of 1816, we show that a larger share of Protestants decreased the gender gap in basic education. This result holds when using only the exogenous variation in Protestantism due to a county's or town's distance to Wittenberg, the birthplace of the Reformation. Similar results are found for the gender gap in literacy among the adult population in 1871.     

Public policies,pressure groups,and dead weight costs

This paper presents a model of competition among special interest groups for political influence. Each active group exerts pressure to affect its taxes and subsidies, where activities of different groups are related by the equality between total tax collections and total tax subsidies. The dead weight costs and benefits of taxes and subsidies play a major role in our model. An increase in the dead weight cost of taxation encourages pressure by taxpayers, while an increase in the dead weight costs of subsidies discourages pressure by recipients. Various applications of the analysis are discussed.     

Robust min–max portfolio strategies for rival forecast and risk scenarios

We consider an extension of the Markowitz mean–variance optimization framework to multiple return and risk scenarios. It is well known that asset return forecasts and risk estimates are inherently inaccurate. The method proposed provides a means for considering rival representations of the future. The optimal portfolio is computed, simultaneously with the worst case, to take account of all rival scenarios. This is a min-max strategy which is essentially equivalent to a robust pooling of the scenarios. Robustness is ensured by the noninferiority of min–max. For example, a basic worst-case optimal return is guaranteed in view of multiple return scenarios. If robustness happens to have too high a cost, guided by the min–max pooling, it is also possible to explore other pooling alternatives. A min–max algorithm is used to solve the problem and illustrate the robust character of min–max with return and risk scenarios. We study the properties of the min–max risk–return frontier and compare with the potentially suboptimal worst-case where the investment strategy and the worst case are computed separately.     

Competition to international satellite communications services

Rapid construction of transoceanic fiber optic cables and the successful establishment of private satellite companies with inter-regional or global coverage have fundamentally altered the environment in which international telecommunications capacity is provided. This article presents industry data and discusses market developments which document substantial competition that has emerged in international facilities-based telecommunications. Intelsat, historically the largest provider of international telecommunications capacity, has seen its market position decline rapidly for all services and all major geographic market areas worldwide.