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. 26-020 // 2026

    The Differential Economic Effects of Private Universities in Urban and Rural Regions

    We investigate whether the local economic effects of niche university actors depend on regional context. Focusing on private university campuses in Germany, we exploit their staggered foundation between 1990 and…

  2. ZEW Discussion Paper No. 26-019 // 2026

    Identifying Circular Public Procurement with Large Language Models: An Application to Firm-Level Circular Innovation

    Policy makers increasingly recognize circular public procurement as a demand-pull instrument for stimulating the transition to a circular economy. However, empirical studies on circular public procurement have…

  3. ZEW Discussion Paper No. 26-018 // 2026

    Additional Award Criteria in Public Procurement Tenders and Firms’ Innovation Performance Heterogeneity

    Public procurement is widely regarded as an important instrument to foster innovation. We examine how additional award criteria beyond price relate to firms’ realized innovation performance by combining…

  4. ZEW Discussion Paper No. 26-017 // 2026

    Survey Design and Professional Forecasters: The Case of Uncertainty in the US SPF

    Histogram forecasts of inflation and growth from the US Survey of Professional Forecasters (SPF) allow for an assessment of the evolution of forecast uncertainty. However, this assessment is complicated by…

  5. ZEW Discussion Paper No. 26-016 // 2026

    Unleashing Productivity Growth in the Age of Digitalisation – Evidence From German SMEs

    Recent literature has increasingly focused on deciphering the modern productivity puzzle, with particular attention given to the link between digital technologies and firm-level productivity. So far, much of…

  6. ZEW Discussion Paper No. 26-015 // 2026

    Testing an Investment Simulation Tool – Effects on Knowledge, Confidence, and Motivation

    Online brokers and robo advisors frequently use investment simulation tools to visualize portfolio choices and illustrate investment scenarios to their clients. I conduct a survey experiment to study whether…

  7. ZEW Discussion Paper No. 26-014 // 2026

    Opt-in or Opt-out? The Power of Defaults in Pension Enrollment Choices

    Default settings strongly increase pension enrollment, especially when savings incentives are high and choices are complex. We show that the effect is weaker when incentives are low, options are simple, and…

  8. ZEW Discussion Paper No. 26-013 // 2026

    Clusters of Excellence and Science Spillovers to Industry: Evidence From Additive Manufacturing

    Competitive public research funding is an important policy instrument to foster scientific progress. The effective design of such funding schemes and whether they generate knowledge spillovers to industrial…

  9. ZEW Discussion Paper No. 26-012 // 2026

    Excess Profit Taxes in Times of Crisis: The Example of the Inframarginal Revenue Cap in the EU Electricity Market

    We conduct a data-based policy evaluation of the first large-scale, EU-wide excess profit tax, implemented during the 2022 European energy crisis to tax the windfall profits of inframarginal electricity…