1. ZEW Discussion Paper Nr. 00-70 // 2000

    Imposing and Testing Curvature conditions on a Box-Cox Function

    Many empirical studies in applied production analysis are based on functional forms that have to satisfy some curvature conditions in order to be compatible with microeconomic theory. Curvature conditions means…

  2. ZEW Discussion Paper Nr. 00-69 // 2000

    How Much Does a Year off Cost? - Estimating the Wage Effects of Employment Breaks and Part-Time Periods

    Discontinuities in the employment profile are supposed to cause wage cuts since they imply an interruption in the accumulation of human capital as well as a depreciation of the human capital stock built up in…

  3. ZEW Discussion Paper Nr. 00-68 // 2000

    Management Control and Innovative Activity

    This paper discusses the different incentives of managers versus firm owners to invest in innovative activities. Economic theory proposes different incentives in owner-led firms and manager-controlled firms. In…

  4. ZEW Discussion Paper Nr. 00-67 // 2000

    Control Transfers in Corporate Germany: Their Frequency, Causes and Consequences

    For a sample of almost 1000 German companies through the years 1987-1994 this study shows that there is a significant market for large share blocks. The vast majo-rity of block transfers leads to changes in…

  5. ZEW Discussion Paper Nr. 00-65 // 2000

    The Behaviour of Noise Traders - Empirical Evidence on Purchases of Business Magazines

    According to the prospect theory financial investors tend to sell winners too early and ride losers too long. Hence, financial investors are changing their positions more frequently in a bull market than in a…