Creative Destruction, Investment Volatility, and the Average Age of Capital

In this article, a new numerical procedure is used to compute the equilibrium of a vintage capital growth model with nonlinear utility, where the scrapping time is nonconstant. We show that equilibrium investment and output converge nonmonotonically to the balanced growth path due to replacement echoes. We find that the average age of capital is inversely related to output, which is consistent with recent micro evidence reinforcing the importance of the embodied question. We also find that an unanticipated permanent increase in the rate of embodied technological progress causes labor productivity to slowdown in the short run.     

Choice and the Internet: From Clickstream to Research Stream

The authors discuss research progress and future opportunities for modeling consumer choice on the Internet using clickstream data (the electronic records of Internet usage recorded by company web servers and syndicated data services). The authors compare the nature of Internet choice (as captured by clickstream data) with supermarket choice (as captured by UPC scanner panel data), highlighting the differences relevant to choice modelers. Though the application of choice models to clickstream data is relatively new, the authors review existing early work and provide a two-by-two categorization of the applications studied to date (delineating search versus purchase on the one hand and within-site versus across-site choices on the other). The paper offers directions for further research in these areas and discusses additional opportunities afforded by clickstream information, including personalization, data mining, automation, and customer valuation. Notwithstanding the numerous challenges associated with clickstream data research, the authors conclude that the detailed nature of the information tracked about Internet usage and e-commerce transactions presents an enormous opportunity for empirical modelers to enhance the understanding and prediction of choice behavior.     

William J. Baumol: An Entrepreneurial Economist on the Economics of Entrepreneurship

William J. Baumol is the 2003 winner of the International Award for Entrepreneurship and Small Business Research. Throughout his career Baumol has urged the profession to pay attention to the instrumental role of entrepreneurship in economic renewal and growth. At the same time he has insisted that economists continue to use their usual tool box when the purview of analysis is extended to entrepreneurship. Hence, Baumol can be characterized as a revolutionary from within. In this article we present and discuss Baumol's research contribution in the areas of entrepreneurship and small business economics, notably from a growth perspective. In addition to placing his work in these areas into the wider context of his full contribution, we emphasize Baumol's findings that growth cannot be explained by the accumulation of various factors of production per se; human creativity and productive entrepreneurship are needed to combine the inputs in profitable ways. As a result, an institutional environment that encourages productive entrepreneurship and human experimentation becomes the ultimate determinant of economic growth.     

Determinants of the Prevalance of Start-ups and High-Growth Firms

The purpose of this study is to identify key institutional determinants of firm emergence and growth. We do this using various types of data from Sweden. A characterization of a number of institutions and policy measures shows that they are likely to have contributed to an environment that discourages entrepreneurial activity and firm growth. Aspects dealt with include: missing arenas for entrepreneurship in the care sectors and for household-related services, taxation of entrepreneurial income, incentives for wealth accumulation, wage-setting institutions and labor market regulations. Using original data, we provide evidence of a low prevalence of nascent entrepreneurs and a small net employment contribution by high-growth firms. We admit that indisputable evidence for the effects of institutional arrangements is almost impossible to establish. However, the consistency of our theoretical arguments and empirical data makes a strong case for the notion that the Swedish case illustrates the costs of giving too little weight to economic renewal in policy making.     

The use and development of indicators for the commercialisation of university research in a national support programme

Governments in most countries have set up specialised programmes to support the commercialisation of academic research. A key challenge is to develop indicators that are able to measure operation and impact. This study shows how different indicators are used to satisfy different stakeholders of a Norwegian support programme. Policy intervention is supposed to lead to additionality related to input, behaviour and output. While the support programme uses input and behavioural measures as strategic tools for its operation, policy makers are mostly preoccupied with output measures. This study illustrates how indicators develop over time, partly co-evolving with the development of the programme and the national commercialisation infrastructure. Indicators serve as incentives for the agents involved, but they may also influence the strategies of the programme that established them. The external signalling effect of indicators remains central, while its use in daily operations becomes less important with time and experience.     

The Morality of “new” CEO Activism

Journal of Business Ethics - CEOs’ social and environmental activism attracts significant public and research interest. Positioned as an expression of personal morality, such activism is...     

Income and Price Elasticities of Demand in South Africa: An Application of the Linear Expenditure System

This paper investigates the expenditure patterns of South African households using detailed cross‐sectional expenditure and price data that varies across region and time. Linear expenditure system parameter estimates are used to calculate income and price elasticities for a number of product categories at different points of the income distribution. We find substantial variation in the price and income elasticities of demand for items across the income distribution, with the bottom quartile being extremely sensitive to increases in the price of food and clothing items, and the top quartile being as sensitive as households in developed countries.     

Optimal Real Estate Portfolios

In recent years, increasing attention has been paid the problem of analyzing, evaluating and selecting real estate investments within the context of a portfolio. Most approaches simply attempt to adapt existing theory and models from the well-developed literature of securities investments. Most adaptations or extensions to real estate are not without serious problems, however, because of several fundamental difficulties relating to optimization technology inadequacies and a general lack of reliable and consistent market data.
This article deals with the major problems of utilizing some of the classic securities investment models for real estate. Further, a risk-return model is advanced which overcomes most of the fundamental problems outlined earlier in the article.