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. 25-064 // 2025

    Turbulence Ahead: Economic Policies for Decarbonizing Aviation

    We study the design of climate policy for hard-to-abate sectors, focusing on global aviation. We build a spatial equilibrium model that links ticket booking data, the global airline network, and…

  2. ZEW Discussion Paper No. 25-063 // 2025

    Financial Socialization and the Gender Investment Gap

    Women are significantly less likely to participate in the stock market than men. We show that financial socialization plays an important role in explaining this gap. Survey data from Germany and the U.S.…

  3. ZEW Discussion Paper No. 25-062 // 2025

    Intangible Assets and Productivity at the Firm Level: R&D versus non-R&D Intangibles

    Intangible assets have increasingly been identified as a main source of productivity gains. Since the pioneering work by Corrado, Hulten, and Sichel (2005), empirical research has largely focused on macro and…

  4. ZEW Discussion Paper No. 25-061 // 2025

    Firms’ Disclosure of University Ties on Their Website: An Explorative Analysis of Ist Role for Innovation Performance

    This paper explores a novel web-based indicator to examine how firms’ disclosure of university ties on their websites shapes their innovation performance. First, using data from the German Community Innovation…

  5. ZEW Discussion Paper No. 25-060 // 2025

    Do Energy-Saving Nudges Deliver During High-Price Periods? Field Experimental Evidence From the European Energy Crisis

    Urged by the European Energy Crisis and the threatening consequences of severe natural gas shortages, energy providers launched gas-saving initiatives incorporating financial incentives to reduce residential…

  6. ZEW Discussion Paper No. 25-059 // 2025

    Doubling Down Political Budget Cycles: The Role of State-Owned Enterprises

    We study the degree and nature of political budget cycles in public investments when two instruments are available: investments by core governments and, more indirectly, by state-owned enterprises (SOEs). While…

  7. ZEW Discussion Paper No. 25-058 // 2025

    The Dynamic Impact of Refugee Immigration on Native Workers

    We study how low and medium-skilled refugee immigration affects natives’ labor market outcomes. Using individual-level panel data on the German workforce for 2011–2019 and exogenous regional variation from…

  8. ZEW Discussion Paper No. 25-057 // 2025

    Beliefs About Bots: How Employers Plan for AI in White-Collar Work

    We provide experimental evidence on how employers adjust expectations to automation risk in high-skill, white-collar work. Using a randomized information intervention among tax advisors in Germany, we show that…

  9. ZEW Discussion Paper No. 25-056 // 2025

    Holy Days, Lost Days?

    Do public holidays affect economic output? In Germany, strict Sunday trading restrictions create a natural experiment. When public holidays fall on Sundays, they typicallydo not impose additional constraints on…