ZEW Discussion Papers

Mit diesen Beiträgen, die überwiegend in Englisch verfasst sind, beteiligen sich die Forscher/innen des ZEW an wissenschaftlichen Fachdebatten. Die Publikationen enthalten vorläufige Beiträge, die zur Veröffentlichung in Fachzeitschriften vorgesehen sind. Die Discussion Papers können ab 1.1.1998 als pdf-Datei abgerufen werden. Sie richten sich an nationale und internationale Zielgruppen.

  1. ZEW Discussion Paper Nr. 25-033 // 2025

    Child Penalty Estimation and Mothers’ Age at First Birth

    We show that the widespread approach to estimate the career costs of motherhood – so called “child penalties” – is prone to produce biased results, as it pools first-time mothers of all ages without accounting…

  2. ZEW Discussion Paper Nr. 25-032 // 2025

    The Heat Is On: An Exploratory Investigation of How Climate Change-Related Challenges Affect SMEs’ R&D Activities

    Climate change can cause major challenges for Small and Medium-sized Enterprises (SMEs). Responding and adapting to such challenges is crucial, as SMEs are vital for driving economic growth and employment in…

  3. ZEW Discussion Paper Nr. 25-031 // 2025

    A KISS for Central Bank Communication in Times of High Inflation

    During the post-pandemic inflation surge, many central banks actively used communication about the inflation outlook as a policy tool to limit spillovers from realized to expected inflation. We present novel…

  4. ZEW Discussion Paper Nr. 25-030 // 2025

    Trusted Research and Innovation: How Knowledge Leakage Affects the Research & Innovation Ecosystem

    A robust Research & Innovation (R&I) ecosystem is essential for progress, economic resilience, and addressing complex challenges. At the heart of this ecosystem, knowledge fuels innovation and further discovery.…

  5. ZEW Discussion Paper Nr. 25-029 // 2025

    Patents, Trade Secrets and Performance Aspirations in Family Firms

    We investigate whether family ownership is associated with a preference for patents or trade secrets. Using a sample of S&P 500 firms, we show that family ownership is negatively associated with patenting and…

  6. ZEW Discussion Paper Nr. 25-028 // 2025

    Do China’s Special Economic Zones Increase Incentives to Invest in R&D?

    China’s special economic zones (SEZs) have been established to foster business growth and innovation by improving the institutional context of specific sub-regional areas. We examine the effect of SEZs on the…

  7. ZEW Discussion Paper Nr. 25-027 // 2025

    The Effect of Airbnb on Housing Prices: Evidence from the 2017 Solar Eclipse

    This study estimates the causal impact of Airbnb expansion on local housing prices by exploiting the 2017 total solar eclipse as a natural experiment. The eclipse’s path of totality created a exogenous temporary…

  8. ZEW Discussion Paper Nr. 25-026 // 2025

    The Effects of Public Procurement Requirements and Voluntary Standards on Environmental Product Innovation

    Public procurement requirements and voluntary standards are increasingly used to foster environmental product innovations. However, quantitative evidence on their individual and joint effects is absent, and…

  9. ZEW Discussion Paper Nr. 25-025 // 2025

    Hospital Competition, Service Provision and Quality – Evidence From Maternity Units

    Maternity unit closures are increasingly common in areas with low birth rates, resulting in diminished competition between units. We examine how competition affects the quality and amenities of the remaining…

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