1. ZEW policy brief Nr. 20-02 // 2020

    Covid-19-Krise und die erwarteten Auswirkungen auf F&E in Unternehmen

    Die Maßnahmen zur Verlangsamung der Verbreitung des Covid-19-Erregers haben die Weltwirtschaft in weiten Teilen zum Erliegen gebracht. Dies wird in Deutschland sowie in vielen anderen Ländern zu einer tiefen…

  2. Referierte Fachzeitschrift // 2020

    Public Procurement of Innovation: Evidence from a German Legislative Reform

    Using public procurement to promote private innovation activities has attracted increasing attention recently. Germany implemented a legal change in its procurement framework in 2009, which allowed government…

  3. ZEW Discussion Paper Nr. 20-018 // 2020

    R&D Investment Under Financing Constraints

    This paper tests for the sensitivity of R&D to financing constraints conditional on restrictions in external financing. Financing constraints of firms are identified by an exogenously calculated rating index.…

  4. ZEW Discussion Paper Nr. 20-017 // 2020

    On Event Studies and Distributed-Lags in Two-Way Fixed Effects Models: Identification, Equivalence, and Generalization

    We discuss important properties and pitfalls of panel-data event study designs. We derive three main results. First, binning of effect window endpoints is a practical necessity and key for identification of…

  5. ZEW Discussion Paper Nr. 20-016 // 2020

    Fiscal and Individual Rates of Return to University Education With and Without Graduation

    Based on a detailed model of the German tax-benefit system, this paper simulates private and fiscal returns to education for college graduates and college dropouts. Completing a five-year college degree is found…

  6. ZEW Discussion Paper Nr. 20-015 // 2020

    The Ratchet Effect in Social Dilemmas

    In this paper, we investigate whether dynamic incentive schemes lead to a ratchet effect in a social dilemma. We test whether subjects strategically restrict their contribution levels at the beginning of a…

  7. ZEW-Kurzexpertise Nr. 20-04 // 2020

    Europäische Finanzinstrumente in der Corona-Krise

    Die COVID-19-Pandemie ist nicht nur eine humanitäre Krise, sondern auch ein einschneidendes ökonomisches Krisenereignis. Die ökonomischen und finanziellen Folgen sind derzeit nicht seriös abschätzbar und hängen…