The case against a common fiscal boost in Europe

Policymakers in the EU member states are currently shaping rescue packages to prevent the financial crisis hitting their economies with unmitigated force. Each government is responding to the emerging problems with a country-specific set of measures. Given the global nature of the crisis, would coordinated action at the European level not be a better approach? Was the German government — much-criticised for its initial reluctance to adopt massive fiscal stimulation measures — right after all to exploit the option value of waiting in a situation of high uncertainty?     

Testing the parametric form of the volatility in continuous time diffusion models—a stochastic process approach

We present new tests for the form of the volatility function which are based on stochastic processes of the integrated volatility. We prove weak convergence of these processes to centered processes whose conditional distributions are Gaussian. In the case of testing for a constant volatility the limiting process are standard Brownian bridges. As a consequence an asymptotic distribution free test and bootstrap tests (for testing of a general parametric form) can easily be implemented. It is demonstrated that the new tests are more than the currently available procedures. The new approach is also demonstrated by means of a simulation study.     

Elger Blühm (15.8.1923–3.2.2007)

Ohne Zusammenfassung     

Who wins and who loses from state subsidies?

China is perceived to rely on subsidizing firms in targeted industries to improve their performance and stay competitive. We implement an approach that allows for the joint estimation of direct and indirect effects of subsidies on subsidized and non-subsidized firms. We find that firms that receive subsidies experience a boost in productivity. However, our approach highlights the importance of indirect effects, which are generally neglected in the literature. We find that, in general but not always, non-subsidized firms experience reductions in their productivity growth if they operate in a cluster where other firms are subsidized. These negative externalities depend on the share of firms that receive subsidies in the cluster. Aggregating direct and indirect effects into a (weighted) total effect shows that this negative indirect effect tends to dominate. We interpret our results in light of a simple heterogenous firm model, which highlights that subsidization in a competitive environment of firms may potentially harm non-subsidized firms.     

Competitive search markets for durable goods

Summary. This paper considers a dynamic version of Akerlof's (1970) lemons problem where buyers and sellers must engage in search to find a trading partner. We show that if goods are durable, the market itself may provide a natural sorting mechanism. In equilibrium, high-quality goods sell at a higher price than low-quality goods but also circulate longer. This accords with the common wisdom that sellers who want to sell fast may have to accept a lower price. We then compare the equilibrium outcomes under private information with those under complete information. Surprisingly, we find that for a large range of parameter values the quilibrium outcomes under the two information regimes coincide, despite the fact that circulation time is used to achieve separation. Received: August 24, 2000; revised version: October 24, 2000     

Wertorientierte Unternehmenssteuerung in der Versicherung

Praxis / MagazinNews

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