Knowledge flows within and across countries should be carriers of important learning spillovers. We use data on 1.5 million patents and 4.5 million citations to analyze knowledge flows across 147 subnational regions. We estimate that only 15% of average knowledge is learned outside the average...

Dieses Papier untersucht, inwieweit Multifaktormodelle nach Fama/French (1993) am deutschen Aktienmarkt die zeitliche Streuung von Renditen abbilden und Portfolio-Renditen im Querschnitt erklären können. Analog zu vergleichbar angelegten Studien am US-amerikanischen, kanadischen und britischen...

This paper investigates the effects of macroeconomic volatility on nonfinancial firms cash holding behavior. Using an augmented cash bufferstock model, we demonstrate that an increase in macroeconomic volatility will cause the crosssectional distribution of firms cashtoasset ratios to narrow. We...

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...