Core concepts for incomplete market economies

We examine the notion of the core when cooperation takes place in a setting with time and uncertainty. We do so in a two-period general equilibrium setting with incomplete markets. Market incompleteness implies that players cannot make all possible binding commitments regarding their actions at different date-events. We unify various treatments of dynamic core concepts existing in the literature. This results in definitions of the Classical Core, the Segregated Core, the Two-stage Core, the Strong Sequential Core, and the Weak Sequential Core. Except for the Classical Core, all these concepts can be defined by requiring the absence of blocking in period 0 and at any date-event in period 1. The concepts only differ with respect to the notion of blocking in period 0. To evaluate these concepts, we study three market structures in detail: strongly complete markets, incomplete markets in finance economies, and incomplete markets in settings with multiple commodities. Even when markets are strongly complete, the Classical Core is argued not to be an appropriate concept. For the general case of incomplete markets, the Weak Sequential Core is the only concept that does not suffer from major defects.     

Regional concentration in the United States and Europe: Who follows whom?

Regional Concentration in the United States and Europe: Who Follows Whom? — This paper investigates differences in the regional concentration of manufacturing in the United States and in Europe. We use a new data set (value added and employment, comparable number of regions in the United States and Europe, manufacturing disaggregated into 10 sectors, period 1987–1995/98). The main result is that the level of regional concentration is indeed higher in the United States, although the difference is much less than suggested by past studies, which relied on employment figures. Regional concentration has been declining over time, faster in the United States thus converging to the lower European level from above. In Europe, this tendency has been specifically evident since the installment of the Single Market Program.     

Generic strategies and firm performance in SMEs: a longitudinal study of Austrian SMEs

This paper studies the impact of generic strategies on firm performance using a longitudinal study of small and medium-sized enterprises (SMEs) in Austria. In two surveys, data on the strategic behavior and performance of the same group of firms were gathered for the period from 1992 to 2002. The study expands existing literature, which provides little evidence whether the persistent commitment to a generic strategy over a longer period pays off or whether strategic change is the rule in SMEs, reflecting their flexibility as a potential competitive advantage. We consider the traditional generic strategies of cost-efficiency and differentiation, but also examine the group of firms that have no clear strategy or are “stuck in the middle.” Within this group, we distinguish between those companies that deliberately combine traditional low cost production and differentiation, i.e., follow a combination strategy, firms that change their strategy and those that have no strategy. We argue that a combination strategy is a viable strategic choice for SMEs in the long run. We found that the majority of firms pursued a persistent strategy over a 10-year period, but that companies that changed their generic strategy did not produce inferior results to those that adhered to a single strategy over the entire period. Our results reveal that firms that follow a combination strategy outperform companies with no generic strategy in terms of profitability and growth and achieve higher profitability than companies that follow a differentiation strategy.