Energieeffizienz: größte Energiequelle oder Quell zusätzlicher Nachfrage?

Energy efficiency improvements are generally seen as the royal road to sustainability and energy security. The underlying idea is simple: if the same amount of output can be produced with fewer inputs, this saves resources and alleviates environmental issues. But this logic fails to recognise basic economic principles. Efficiency improvement may eventually stimulate energy consumption. This so-called rebound effect limits the effectiveness of policies inducing energy efficiency by means of standards. Policy makers should acknowledge this and take rebound into account when designing climate and energy policy.     

The brain drain, ‘educated unemployment’, human capital formation,and economic betterment1

Extending both the ‘harmful brain drain’ literature and the ‘beneficial brain gain’ literature, this paper analyzes both the negative and the positive impact of migration by skilled individuals in a unified framework. The paper extends the received literature on the ‘harmful brain drain’ by showing that in the short run, international migration can result in ‘educated unemployment’ and overeducation in developing countries, as well as a brain drain from these countries. A simulation suggests that the costs of ‘educated unemployment’ and overeducation can amount to significant losses for the individuals concerned, who may constitute a substantial proportion of the educated individuals. Adopting a dynamic framework, it is then shown that due to the positive externality effect of the prevailing, economy‐wide endowment of human capital on the formation of human capital, a relaxation in migration policy in both the current period and the preceding period can facilitate ‘take‐off’ of a developing country in the current period. Thus, it is suggested that while the migration of some educated individuals may reduce the social welfare of those who stay behind in the short run, it improves it in the long run.     

Analyzing economic market interactions as conflicts: New concepts to assess market-based policy instruments

Complementing market-based policy instruments with conflict analysis approaches provides a wider understanding of market situations and allows to identify minimal requirements regarding needs, power and conflict dynamics. If these are not met, a market cannot be successfully introduced or a liberalization process implemented. Conflict analysis offers a language better suited to the concerns of people negatively affected by new markets. Applying this language helps to counterbalance the predominance of economic concepts. This fosters mutual understanding and enhances the prospect for successful implementation of market-based policies. We illustrate the potential of conflict analysis with examples from water privatization and labeling.     

Using “Rapid Response” as a competitive tool

New technology allows companies to respond quickly to customer demands that differ from country to country. In the international arena, time and flexibility are competitive weapons.     

Maternity rights and mothers' return to work

This paper uses a cohort of 12,000 births to examine the effect of maternity rights on mothers' post-birth return to employment decisions. It uses a discrete hazard model to disentangle the effects of the terms of maternity rights entitlements from other factors that influence the timing of a mother's return to work. Mothers with rights have an underlying (but unobserved) stronger attachment to the labour market that prompts earlier return than on average. We take this into account by estimating a counterfactual distribution of return times using a sample of women who failed to qualify for maternity rights but who have similar levels of labour market attachment. Even when differential attachment is taken into account there remains a substantial impact of maternity rights on behaviour.     

Earnings quality: Some evidence on the role of auditor tenure and auditors’ industry expertise

Prior studies suggest that auditors with short tenure are associated with lower earnings quality because of the lack of client-specific knowledge and/or low balling. In this study, we examine whether industry specialization of auditors and low balling affect the association between auditor tenure and earnings quality. We find that the association between shorter auditor tenure and lower earnings quality is weaker for firms audited by industry specialists compared to non-specialists. In addition, we do not find results consistent with the low balling explanation.     

Price competition during and after promotions

We provide a framework for setting regular prices and using promotional discounts in a duopoly where long‐term promotional effects are present and the firms' pricing and promotional strategies are common knowledge (e.g., as in online markets). We show that at equilibrium, the two firms may not promote and instead adopt an Everyday Low Price (EDLP) strategy. Consumers' tendency to stockpile promoted products, the level of brand loyalty and product differentiation, and the possibility of a postpromotional sales increase critically influence regular prices, price discount rates, and profits. Under some conditions consumer stockpiling intensifies promotional competition and reduces firms' profits while the possibility of attracting new consumers reduces the need to heavily promote and ensures better profits. Managerial implications are discussed. Copyright © 2007 ASAC. Published by John Wiley & Sons, Ltd.     

Exchange Rates and Oil Prices

The paper documents a robust and interesting relationship between the real domestic price of oil and real effective exchange rates for Germany, Japan and the United States. It also offers an explanation of why the real oil price captures exogenous terms-of-trade shocks, and why such shocks could be the most important factor determining real exchange rates in the long run.