ZEW Discussion Papers

Researchers at the ZEW participate in scientific debates by publishing their papers. The papers are predominantly in English (marked). For the German papers an English abstract is available. The contributions are intended for a final publication in special interest titles. The discussion papers can be downloaded as PDF or PostScript files starting from 1.1.1998. They aimed at national and international target groups.

  1. ZEW Discussion Paper No. 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.…

  2. ZEW Discussion Paper No. 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…

  3. ZEW Discussion Paper No. 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…

  4. ZEW Discussion Paper No. 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…

  5. ZEW Discussion Paper No. 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…

  6. ZEW Discussion Paper No. 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…

  7. ZEW Discussion Paper No. 25-024 // 2025

    Local Policy Misperceptions and Investment: Experimental Evidence From Firm Decision Makers

    We study firm responses to local policies through a survey experiment, providing randomized information on the competitiveness of business tax rates and highway access in their headquarters’ municipality. Firms…

  8. ZEW Discussion Paper No. 25-023 // 2025

    Sorting, Status, and Shadow Education: How Track Placement Shapes Parental Investment

    Educational tracking—separating students into tracks or schools by ability — is commonplace, but access and preferences for top programs often depend on socioeconomic status (SES), reinforcing inequality. We…

  9. ZEW Discussion Paper No. 25-022 // 2025

    The Long-Run Effects of Conditional Cash Transfers: The Case of Bolsa Familia in Brazil

    Conditional Cash Transfers (CCTs) have become a key antipoverty policy in Latin America in the last 25 years. The ultimate goal of this kind of programs is to break the intergenerational transmission of poverty…