Substitute goods, auctions, and equilibrium

This paper identifies two notions of substitutes for auction and equilibrium analysis. Weak substitutes, the usual price-theory notion, guarantees monotonicity of tâtonnement processes and convergence of clock auctions to a pseudo-equilibrium, but only strong substitutes, which treats each unit traded as a distinct good with its own price, guarantees that every pseudo-equilibrium is a Walrasian equilibrium, that the Vickrey outcome is in the core, and that the “law of aggregate demand” is satisfied. When goods are divisible, weak substitutes along with concavity guarantees all of the above properties, except for the law of aggregate demand.     

Like father, like son? A note on the intergenerational transmission of IQ scores

Using a large population-based dataset, we estimate a substantial intergenerational transmission of IQ scores; a 10% increase in father's score at age 18 is associated with a 3.2% increase in son's score. This relationship also holds true for various subpopulations.     

How firm capabilities affect who benefits from foreign technology

We explore how firm capabilities affect the diffusion of technology brought with foreign direct investment (FDI). Using a panel dataset on Indonesian manufacturers from 1988 to 1996, we measure how the productivity of differing domestic firms responds to the entry of multinational competitors. We find that firms with investments in research and development and firms with highly educated employees adopt more technology from foreign entrants than others. In contrast, firms that have a small “technology gap,” meaning that they are close to the international best-practice frontier, benefit less than firms with weak prior technical competency. This finding suggests that the marginal return to new knowledge is greater for firms that have more room to “catch up” than it is for already competitive firms.     

The short and long-run interdependencies between the Eurozone and the USA

We estimate quarterly cointegrating vector autoregressive models for the Eurozone and the USA based on long-run restrictions derived from a dynamic open economy model. Three long-run relations between the Eurozone and the USA emerge: relative purchasing power parity, international interest parity and a stationary output gap between the two economies. Generalized impulse response functions show differences in the dynamic adjustment of the two economies. Due to the I(1)-characteristic of both output series and the stability conditions imposed by the long-run equilibrium relationships, shocks to the model produce level effects only, while growth rates converge to their long-run averages.

Kurzarbeit — Sinnvoller Konjunkturpuffer oder verlängertes Arbeitslosengeld?

Zusammenfassung  Zur überwindung der aktuellen Krise wird nicht nur in Deutschland das Instrument der Kurzarbeit verwendet. Es ist in Deutschland im Vergleich zu anderen L?ndern jedoch sehr gro?zügig gestaltet und wurde kürzlich sogar noch ausgeweitet. Damit besteht die Gefahr, dass nicht nur — wie beabsichtigt — bei einem vorübergehenden Arbeitsausfall Entlassungen verhindert werden, sondern notwendige strukturelle Anpassungen verz?gert werden. Wie ist die Ausgestaltung der deutschen Kurzarbeit zu bewerten? Dr. Werner Eichhorst, 40, ist stellvertretender Direktor am Institut zur Zukunft der Arbeit, IZA in Bonn; Paul Marx, 26, Dipl.-Politologe, ist dort als Doktorand t?tig. Erweiterte und aktualisierte Fassung von W. Eichhorst, P. Marx: Le ch?mage partiel, ammortisateur social de la crise?, in: Regards sur l’Economie Allemande, H. 90, S. 23–30.     

The extent and nature of opportunity identification by experienced entrepreneurs

Guided by insights from cognitive theories, this article explores the links between entrepreneurs' prior business ownership experience and their opportunity identification behavior. Hypotheses were tested using data from 630 entrepreneurs. Experienced entrepreneurs identified more opportunities and exploited more innovative opportunities with greater wealth creation potential. Entrepreneurs that had owned more than 4.5 businesses, however, identified fewer opportunities. The nature of prior business ownership experience also shaped opportunity identification behavior. An inverse U-shaped relationship was detected between the proportion of failed businesses relative to the number of businesses owned and the number of opportunities identified in a given period. Business failure experience was not associated with the innovativeness of exploited opportunities.     

Entrepreneurship and innovation in Ghana: enterprising Africa

This study adopts a multi-level theoretical framework to examine data from 496 entrepreneurs in Ghana. Seven types of innovation activity are analysed against three categories of variables: the characteristics of the entrepreneur, the internal competencies of the firm, and firm location. Across all respondents, the incidence of incremental innovation was far greater than novel innovation. The extent of innovation was related to the education level of the entrepreneur. Firm size and involvement in exporting were positively related to innovation, but firm growth is less systematically so. Innovation was greater in firms located in conurbations compared to firms located in large and small towns. We conclude with suggestions for policy to promote entrepreneurship and innovation in Ghana.      

Seven challenges to combining human and automated service

We introduce this special issue by addressing seven key challenges associated with managing hybrid human-automated service systems. These consist of the following:

• 1 What strategic and tactical issues arise when managing hybrid service systems?
• 2 How should the core “value proposition” be set?
• 3 What special considerations arise in the design and implementation phases?
• 4 How can service delivery be managed to identify systemic problems and to address service breakdowns?
• 5 How can communications with clients improve the functioning of service systems?
• 6 What performance measures should be used to monitor process, outputs, client perceptions, and financial outcomes?
• 7 How can we coordinate the various interdisciplinary activities needed to address the previous six issues?

We consider these challenges after first characterizing the historical evolution of service delivery, reviewing some of the literature in the administrative sciences, and proposing a conceptual framework. Copyright © 2009 ASAC. Published by John Wiley & Sons, Ltd.     

Opportunity Identification and Pursuit: Does an Entrepreneur’s Human Capital Matter?

Extending human capital approaches to entrepreneurship, an entrepreneur’s “inputs” relating to their general (i.e. education and work experience) and entrepreneurship-specific human capital profile (i.e. business ownership experience, managerial capabilities, entrepreneurial capabilities and technical capabilities) are presumed to be related to entrepreneurial “outputs” in the form of business opportunity identification and pursuit. Valid and reliable independent variables were gathered from a stratified random sample of 588 owners of private firms. Ordered logit analysis was used to test several theoretically derived hypotheses. With regard to the number of business opportunities identified and pursued, entrepreneurship-specific rather than general human capital variables “explained” more of the variance. Entrepreneurs reporting higher information search intensity identified significantly more business opportunities, but they did not pursue markedly more or less opportunities. The use of publications as a source of information was positively associated with the probability of identifying more opportunities, while information emanating from personal, professional and business networks was not. Implications for practitioners and researchers are discussed.