This paper analyses the development of universities' patent applications in Germany before and after the abolition of the 'professors' privilege' in 2002. By means of a database with all patent applications of German universities with professors among the inventors (1990-2006), systematic...

The Milwaukee voucher program, as implemented in 1990, allowed only nonsectarian private schools to participate in the program. However, following a Wisconsin Supreme Court ruling, the program was expanded to include religious private schools in 1998. This second phase of the voucher program led...

The Milwaukee voucher program, as implemented in 1990, allowed only nonsectarian private schools to participate in the program. However, following a Wisconsin Supreme Court ruling, the program was expanded to include religious private schools in 1998. This second phase of the voucher program led...

We explore how access to Head Start impacts maternal labor supply. By relaxing child care constraints, public preschool options like Head Start might lead mothers to reallocate time between employment, child care, and other activities. Using the 1990s enrollment and funding expansions and the...

The purpose of this paper is to evaluate empirically the determinants of innovative activities in emerging countries, with particular attention to national, international and intersectoral knowledge spillovers. Our study concerns 16 emerging and 10 technology source countries, for the period...

The purpose of this paper is to evaluate empirically the determinants of innovative activities in emerging countries, with particular attention to national, international and intersectoral knowledge spillovers. Our study concerns 16 emerging and 10 technology source countries, for the period...

Previous empirical evidence searching for externalities from Foreign Direct investment in Portugal showed mixed results. Using a new database containing 5,045 Portuguese manufacturing firms grouped by technological trajectories, we investigate the occurrence and magnitude of externalities from...

In this paper, I analyze recent findings by Coe and Helpman (1995) of trade-related international R&D spillovers. I show generally that randomly created bilateral trade shares also give rise to large estimated international R&D spillovers; often, in fact, to larger estimated spillover effects...

The paper studies the patent productivity of scientists over their life cycle. The incentives for patenting and for publishing are compared and how they shape life cycle productivity. In most empirical studies, publication productivity decreases at the end of the scientific career. In contrast,...