Direct and indirect effects of continuous treatments based on generalized propensity score weighting

This paper proposes semi- and nonparametric methods for disentangling the total causal effect of a continuous treatment on an outcome variable into its natural direct effect and the indirect effect that operates through one or several intermediate variables called mediators jointly. Our approach is based on weighting observations by the inverse of two versions of the generalized propensity score (GPS), namely the conditional density of treatment either given observed covariates or given covariates and the mediator. Our effect estimators are shown to be asymptotically normal when the GPS is estimated by either a parametric or a nonparametric kernel-based method. We also provide a simulation study and an empirical illustration based on the Job Corps experimental study.     

Contextual and Interactional Approaches to Advancing Leadership and Entrepreneurship Research

In this introductory article for the special issue of Journal of Management Studies, entitled ‘Leading Entrepreneurial Ventures: Individual and Team-Based Perspectives’, we leverage insights in the extant literature as well as those insights developed by the authors of the four articles published in response to our call for papers. Overall, we explore multiple nuanced questions with regards to research on entrepreneurship, research on leadership, and their intersection. Our goal is to begin to help guide research on entrepreneurship and leadership, and their intersection, for the next decade.     

The counter-effects of market regulation

Regulation can have counter-effects that work against the interests of those who advocate it, in both centrally-planned and market economies. Little research on these effects has been carried out so far, with the result that they have been ignored by policymakers.     

Conceptions of the dual economy

Due to the current labor market problems and to the increase in personal “free time,” the “other half” of the economy is attracting increased attention: the household economy, the informal sector, black labor, the shadow economy, etc. The purpose of this paper is to summarize the current terminology and conceptual diversity in this field, in order to clarify the notions and thus the theoretical approaches which are a prerequisite for further work at the present stage of research.     

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Resource Configuration in Family Firms: Linking Resources, Strategic Planning and Technological Opportunities to Performance

abstract    We apply the resource-based view of the firm to the study of family firms by investigating how a family specific resource (reciprocal altruism) and a firm specific resource (innovative capacity) contribute to family firm performance. We then examine how the impact of these resources is moderated by strategic planning and technological opportunities. Our findings suggest that family firms can benefit from emphasizing the positive aspects of kinship and from developing innovative capacities. As such, we demonstrate that not only do firm specific resources contribute to family firm performance, but also that family relationships can be a source of competitive advantage for a family firm. In addition, we found a heightened importance of reciprocal altruism in environments rich in technological opportunities, and that strategic planning is more important for those family firms that lack innovative capacities.     

Leistungsbilanzungleichgewichte im Euroraum

The internal imbalances in the euro area are often cited as one of the main reasons for the crisis there. The surpluses, especially those of Germany, correspond to the deficits in the euro area problem countries — Greece, Italy, Ireland, Spain and Portugal. An analysis of the trade and services balances of the problem countries, however, shows that this was only true up to 2004. Since 2005 their deficits with the rest of the world have been bigger, especially with China. Now the imbalances with China, not Germany, are the main concern for euro area problem countries. The reasons for this development were the strong appreciation of the euro and the structure of the economies of the euro area problem countries, which brought them into direct competition with China. Revaluation of other currencies, especially the renminbi, would enable the euro area crisis countries to pursue growth-friendly fiscal consolidation in which stronger external demand replaces internal demand. This was how Germany consolidated its budget — lower fiscal deficits were compensated by external demand contributions. The problem countries could simultaneously shrink both their fiscal and external deficits. Internal devaluation through wage moderation, however, dampens domestic demand and is recessionary in the short term.     

The sky is the limit? The determinants and constraints of European airports commercial revenues

This study investigates the determinants of commercial and retail airport revenues from real estate operations. Aviation revenues per passenger are mainly determined by the national income per capita in the area where the airport is located, the percentage of leisure travelers and the size of the airport. Main drivers of commercial revenues per passenger include the number of passengers passing through the airport, the ratio of commercial to total revenues, national income, the share of domestic and leisure travelers and the number of flights. These results are in line with previous findings of a negative influence of business travelers on commercial revenues per passenger. We also find that a large amount of retail space per passenger is generally associated with lower commercial revenues per square meter confirming decreasing marginal revenue effects. Real estate revenues per passenger are positively associated with national income per capita at airport location, share of intra-EU passengers and percent delayed flights.