This paper presents and compares several time-series models for returns of broadbased stock indices. These models nest a nonlinear asymmetric GARCH (NGARCH) model as a special case. Some of these models are empirically motivated ad-hoc specifications others are derived from a representative...

Owners of private companies are often highly underdiversified which exposes them to idiosyncratic risk. We investigate the consequences of underdiversification at the company level. Information on US companies and their owners is obtained from the Survey of Consumer Finances and the Survey of...

A model is presented for simulating the tax burden on highly skilled manpower. The effective average tax rate, defined as the relative wedge between total remuneration and disposable income, is computed. Income and payroll taxes and social security contributions not yielding an equivalent...

For small high-tech firms international orientation is regarded as crucial for growth and long-term survival. Even newly founded technology based firms (NTBFs) are often internationally active shortly after their inception (?born globals?). However, in order to create jobs and have a sustainable...

This paper investigates how local jurisdictions in a federal system influence each other in the adoption of policy innovations. We look at school districts in Michigan and their participation in a public school choice program launched in 1996. Districts' participation decisions are modelled as...

The ongoing discussion of U.S.-Japanese trade relations suggests that national differences such as in the institutional environment may be relevant for assessing international trade policies. However, economic trade theory often assumes countries to be organized around common notions of complete...

The study provides evidence for the rationale of wage rigidity in Germany compared to the United States. Based on a survey of 801 firms, we extend the study of Campbell and Kanlani (1997, this journal) by using more thorough econometric methods, for example, and find strong support for...

Die Abgrenzung des Erfolges multinationaler Unternehmungen (MNU) für körper-schaftsteuerliche Zwecke erfolgt im Regelfall im Rahmen des Fremdvergleichsgrundsatzes, konkretisiert durch die Transferpreisrichtlinien der OECD. Dieses Erfolgsabgrenzungsparadigma steht im systematischen Gegensatz zu...

Taking account of sinks credits as agreed in Bonn and Marrakech, this paper illustrates how market power could be exerted in the absence of the US ratification under Annex 1 trading and explores the potential implications of non-competitive supply behavior for the international market of...

We show that U.S. withdrawal from the Kyoto Protocol is straightforward under political economy considerations. The reason is that U.S. compliance costs exceed low willingness to pay for dealing with global warming in the U.S. The withdrawal had a crucial impact on the concretion of the Protocol...