Structural holes, innovation and the distribution of ideas

We model knowledge diffusion in a population of agents situated on a network, interacting only over direct ties. Some agents are by nature traders, others are by nature “givers”: traders demand a quid pro quo for information transfer; givers do not. We are interested in efficiency of diffusion and explore the interplay between the structure of the population (proportion of traders), the network structure (clustering, path length and degree distribution), and the scarcity of knowledge. We find that at the global level, trading (as opposed to giving) reduces efficiency. At the individual level, highly connected agents do well when knowledge is scarce, agents in clustered neighbourhoods do well when it is abundant. The latter finding is connected to the debate on structural holes and social capital.     

Specification of Distance Functions Using Semi- and Nonparametric Methods with an Application to the Dynamic Performance of Eastern and Western European Air Carriers

In this paper we examine the productive performance of a group of three East European carriers and compare it to thirteen of their West European competitors during the period 1977–1990. We first model the multiple output/multiple input technology with a stochastic distance frontier using recently developed semiparametric efficient methods. The endogeneity of multiple outputs is addressed in part by introducing multivariate kernel estimators for the joint distribution of the multiple outputs and potentially correlated firm random effects. We augment estimates from our semiparametric stochastic distance function with nonparametric distance function methods, using linear programming techniques, as well as with extended decomposition methods, based on the Malmquist index number. Both semi- and nonparametric methods indicate significant slack in resource utilization in the East European carriers relative to their Western counterparts, and limited convergence in efficiency or technical change between them. The implications are rather stark for the long run viability of the East European carriers in our sample.     

Images of the Virtuous Employee in China's Transitional Economy

We examine contemporary images of employee virtue and managers' perceptions of actual employee conduct in Wuhan, Beijing and Xi'an, drawing on document analysis and structured interviews with 112 respondents in ten case study companies. The image promulgation strategies of the one joint venture enterprise and the two private enterprises in our sample entailed active avowal of tradition linked employee virtue, drawing on a mixture of Communist and Confucian moral imagery. In contrast, most of the seven state-owned or predominantly state invested enterprises had abandoned or marginalized traditional Communist imagery, none promoted Confucian imagery, and two emphasized alternative images of one-sided servility toward the customer. We infer, from managers' accounts, that the abandonment of tradition linked images by the state-owned sector was a tacit acknowledgment of prior covenant violation, and that outside the state-owned sector, tradition linked moral propaganda contributed to moral atmosphere only when part of a consistent high-commitment HRM strategy. In drawing out implications for theory and further research, we note the different socio-political contexts of organizations in China and the West, discuss the relationship between bonds or covenants and psychological contracts, and compare tradition linked employee virtues with dimensions of organizational citizenship.     

On the Validity of the Random Lottery Incentive System

The random lottery incentive system is widely used in experimental economics to motivate subjects. This paper investigates its validity. It reports three experiments which compare responses given to decision tasks which are embedded in random lottery designs with responses in single choice designs in which each subject faces just one task for real. The experiments were designed to detect cross-task contamination effects in the random lottery treatment. No significant differences between treatments, and no significant contamination effects, were found. Over the three experiments, observed differences between the treatments are adequately explained as sampling variation.     

Strategic planning and strategic management in Australian organisations

Many planning and organisational aspects of 48 Australian organisations were examined. The empirical information tends to suggest that the process of adopting the strategic management concept is well advanced in some Australian organisations. Irrespective of size and ownership status, some organisations have already adopted strategic planning, and the process of evolution is continuing towards the final stage of strategic management. The increasing environmental volatility and growing international exposure of organisations in Australia and elsewhere in the Asia Pacific region will increase the pressure to implement international management systems, including strategic management.     

Evolutionary economics and the counterfactual threat: on the nature and role of counterfactual history as an empirical tool in economics

Counterfactual conditional statements are ubiquitous in any scientific endeavour. This paper contains an analysis of the nature of counterfactual conditionals and the conditions under which they are considered assertable by scientists. The paper then applies this analysis to the use of counterfactuals in evolutionary economics, arguing that because evolutionary economics is inherently concerned with historical processes it cannot avoid the use of counterfactual history as one of its tools of empirical analysis. We discuss the strengths and pitfalls of counterfactual history. We argue that because evolutionary economics starts from the foundation that randomness may be inherent in any economic system, the very aspects of evolutionary economics that make counterfactual history a desirable empirical tool also make that tool difficult to employ. RID="*" ID="*" We thank the participants of the International Seminar on Evolutionary Economics as a Research Programme in Stockholm, May 1997, for many helpful comments. We also thank Lorri Baier for many helpful substantive and textual comments. Correspondence to: R. Cowan     

Time Series Analysis of Deregulatory Dynamics and Technical Efficiency: The Case of the U.S. Airline Industry

As markets worldwide become less regulated, it becomes increasingly possible and timely to establish the presence of an empirical relationship between technical efficiency and market forces compelling agents to economize. This article, taking an innovative approach to test the hypothesis that competitive pressure enhances efficiency, constructs a methodology to examine time series of technical efficiency indices for cointegration and convergence. A panel of U.S. airlines, observed quarterly between 1970 and 1990, is used as a case study. Cointegration results are suggestive of long-run relationships between carriers; furthermore, convergence tests document less dispersion in firm performance over time.     

Keynesian economics in the twenty-first century1

The Keynesian theory as set out by Keynes embodied an Achilles heel which he himself half understood but chose to ignore. It is also ignored by “post-Keynesians” and “New Keynesians”. The trouble is not in the labour market but in the goods market, where The General Theory, at least up to Chapter 19, definitely assumes perfect competition. But on that assumption the possibility of a Keynesian recession requires that employers behave with highly inconsistent expectations. Once, however, the assumption of perfect competition in the goods market is replaced by imperfect competition or oligopoly, the Keynesian theory re-emerges not only as robust, but also totally relevant to the 21st century.