1. ZEW Discussion Paper Nr. 04-67 // 2004

    Using Methods of Treatment Evaluation to Estimate the Wage Effect of IT Usage

    In this study, I analyze the relationship between IT use and wages in West Germany in 1998/99. I use two estimation approaches: regression based matching and matching on the propensity score. The richness of the…

  2. ZEW Discussion Paper Nr. 04-64 // 2004

    GPD-linked Bonds as a Financing Tool for Developing Countries and Emerging Markets

    The paper examines the applicability of GDP-linked bonds for the financing of developing countries and emerging markets. GDP-linked bonds are bonds of which the coupon and/or redemption payments are tied to…

  3. ZEW Discussion Paper Nr. 04-61 // 2004

    A Note on Implementing Box-Cox Quantile Regression

    The Box-Cox quantile regression model using the two stage method introduced by Chamberlain (1994) and Buchinsky (1995) provides an attractive extension of linear quantile regression techniques. However, a…

  4. ZEW Discussion Paper Nr. 04-57 // 2004

    Censored Quantile Regressions and the Length of Unemployment Periods in West Germany

    We apply censored quantile regressions to representative German register data with more than 91,000 observations in order to determine crucial factors that influence the distribution of unemployment duration in…

  5. ZEW Discussion Paper Nr. 04-56 // 2004

    The Link between R&D Subsidies, R&D Spending and Technological Performance

    This paper analyzes the effects of public R&D funding on R&D expenditure and patenting behavior of German firms. The main focus is the direct impact of subsidies on R&D and the indirect effect on innovation…

  6. ZEW Discussion Paper Nr. 04-55 // 2004

    Using Innovation Survey Data to Evaluate R&D Policy: The Case of Belgium

    This study focuses on the impact of R&D policies in Flanders. We conduct a treatment effects analysis at the firm level to investigate possible crowdingout effects on the input side of the innovation process.…

  7. ZEW Discussion Paper Nr. 04-53 // 2004

    Semiparametric Estimation of Consumption Based Equivalence Scales – The Case of Germany

    Consumption based equivalence scales are estimated by applying the extended partially linear model (EPLM) to the 1998 German Income and Consumption Survey (EVS). In this model the equivalence scales are…

  8. ZEW Discussion Paper Nr. 04-52 // 2004

    The Effect of ILO Minimum Age Conventions on Child Labour and School Attendance

    Child labour has always been one of the core concerns of the International Labour Organisation (ILO). In this paper, we investigate whether ILO conventions have contributed to reducing the scale of the problem.…

  9. ZEW Discussion Paper Nr. 04-51 // 2004

    The Power Law and Dividend Yields

    Recent research suggests that the power law is one of the most universal laws in nature and it also seems to work quite fine in economics and finance. In this paper we show that the power law explains extremely…

  10. ZEW Discussion Paper Nr. 04-50 // 2004

    The Impact of Equity-preferences on the Stability of Heterogeneous International Agreements

    This paper studies the impact of equity considerations on the stability of international agreements between heterogeneous countries. We show that allowing countries to finance abatement projects in developing…

  11. ZEW Discussion Paper Nr. 04-49 // 2004

    Children in Need of Medical Innovation

    As the innovation process of pharmaceuticals is a long, risky and very costly business, economists typically emphasise lack of profit incentives and small market size as the most important obstacles to…