EDI success in small and medium‐sized enterprises: A field study

This research aims to identify empirically the success factors that have allowed small and medium‐sized enterprises (SMEs) to obtain advantages from electronic data interchange (EDI). These advantages can be operational, managerial, and strategic in nature. Results of a field study done in 39 firms indicate that it is the quality of the organizational context of EDI (organizational support, implementation process, and control procedures) that is crucial to the attainment of benefits from this technology. In turn, the quality of the organizational context is higher when the small firm implements EDI voluntarily rather than having it imposed by a major client or supplier. These results are compared with those of a prior study done in a large business context.     

Closed-form solutions to stochastic process switching problems

This paper studies the price of an asset depending on both a fundamental and possible interventions of an authority. Using the martingale approach in continuous time, we provide closed-form solutions to switching problems involving irreversible, state dependent and intramarginal switch policies. The martingale approach provides additional information regarding the switching policy, namely the average time before authority intervention, the conditional probability of intervention, or the total time of intervention. Applications in international and financial economics include exchange rates modelling, corporate claims valuation and capital budgeting decisions.     

Risk taking in the domain of losses: experiments in several countries

This paper presents an experimental investigation of risk taking in the domain of losses. The experiments were conducted with students in several universities whilst introducing the rudiments of expected utility theory and risk behaviour. The results are partly compatible with expected utility theory, assuming an inflection point in the utility function over losses. They also show similarities in the risk perception of students across different countries, i.e. a useful validation of human behaviour in an international context.     

Are Older Workers Harmful for Firm Productivity?

This paper investigates the effects of the workforce age structure on the productivity of large Belgian firms. More precisely, it examines different scenarios of changes in the proportion of young (16–29 years), middle-aged (30–49 years) and older (more than 49 years) workers and their expected effects on firm productivity. Using detailed matched employer–employee data, we find that young workers are significantly more productive than older workers. Yet, results also show that age structure effects on productivity: (i) have substantially decreased over time and (ii) are much stronger in ICT than in non-ICT firms.     

On-the-job search equilibrium with endogenous unemployment benefits

This paper develops an on-the-job search model with wage posting where unemployment benefits are proportional to past wages. We emphasize that this contributes to increasing the reservation wages of unemployed workers and introduces a feedback effect of the distribution of wages on the distribution of unemployment benefits. We show that the model predictions are consistent with some stylized French facts and quantify the impact of inefficient rejections of low-wage offers by the unemployed. We find that, by reducing the indexing of unemployment benefits to previous earnings and increasing lump-sum transfers, it is possible to increase both employment and welfare.     

Narrow Replication of Yogo (2004) Estimating the Elasticity of Intertemporal Substitution when Instruments are Weak

This narrow replication exercise of Yogo (Review of Economics and Statistics 2004; 86 (3): 797–810) finds results identical to the original paper, and provides results on overidentification tests for specifications that do not suffer from the weak instruments problem. The null hypothesis of the Sargan test is rejected in several cases, in particular for US and UK quarterly data. When other combinations of instruments are used the null of the Sargan test is rejected again in several cases. These rejections cast doubts on either instrument validity or model specification. Copyright © 2011 John Wiley & Sons, Ltd.     

Geodesic normal distribution on the circle

This paper is concerned with the study of a circular random distribution called geodesic normal distribution recently proposed for general manifolds. This distribution, parameterized by two real numbers associated to some specific location and dispersion concepts, looks like a standard Gaussian on the real line except that the support of this variable is [0, 2π) and that the Euclidean distance is replaced by the geodesic distance on the circle. Some properties are studied and comparisons with the von Mises distribution in terms of intrinsic and extrinsic means and variances are provided. Finally, the problem of estimating the parameters through the maximum likelihood method is investigated and illustrated with some simulations.     

The “Services” Explanation for Resale Price Maintenance: Deleterious Results Missed in the Economics Literature and in Legal Decisions

Policy discussions and a U.S. Supreme Court decision interpret retailer services induced by retail price maintenance (RPM) as enhancing consumer surplus (CS) and welfare enhancing, marginalizing dissenting opinions that use similar models but with different parameters. However, if presales services stimulate demand by providing information about a product's value, they need not raise postsale value in use. Inframarginal consumers' presales perceived value may increase, but their postsale value may be unchanged, so their supposed CS gains are ephemeral, and their actual surplus falls proportional to price increase. We show that, even adding in gains to marginal consumers, effects on CS are far more negative than conceived of in this literature. Consequently, in a rule‐of‐reason antitrust environment, if RPM is challenged without alleging collusion or exclusion, presales demand‐inducing information provision is a flimsy defense if CS is the standard and not always convincing if total surplus is the standard.