ZEW Discussion Papers

Überblick

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. 97-10 // 1997

    Vertical Relations between Firms and Innovation: An Empirical Investigation of German Firms

    Joint ventures between firms as part of innovation projects can be seen as a strategy to deal with market failure and other insufficiencies of technology markets. It is the objective of this paper to examine…

  2. ZEW Discussion Paper Nr. 97-09 // 1997

    The determinates of BUND-future price changes: An ordered probit anlysis using DTB and LIFE-data

    This paper investigates the determinants of transaction price changes during BUND-future trading at Deutsche Terminborse (DTB) and London International Financial Futures Exchange (LIFFE). The analysis uses the…

  3. ZEW Discussion Paper Nr. 97-07 // 1997

    Foul or Fair? The Heckman Correction for Sample Selection and its Critique - A Short Survey

    This paper gives a short overview of Monte Carlo studies on the usefulness of Heckman's (1976, 1979) two-step estimator for estimating a selection model. It shows that exploratory work to check for collinearity…

  4. ZEW Discussion Paper Nr. 97-05 // 1997

    GMM Estimation of an Euler Equation Model with German Firm Level Panel Data

    In this paper the outlier robustGMM panel data estimator recently proposed byLucas, van Dijk, and Kloek (1994) is applied to anEuler equation model of firm investment behaviourwith imperfectly competitive…

  5. ZEW Discussion Paper Nr. 97-03 // 1997

    All Quiet on the Wage Front: Gender, Public-Private Sector Issues, and Rigidities in the Polish Wage Structure

    We analyse the Polish wage and unemployment structure between 1992 and 1995 on the basis of the Polish Labour Force Survey. It is shown that within this period wage inequality has stabilised. Surprisingly,…

  6. ZEW Discussion Paper Nr. 97-01 // 1997

    Businessmens Expectations are Neither Rational nor Adaptive

    A framework which allows for the joint testing ofthe adaptive and rational expectations hypotheses is presented. We assume joint normality of expectations, realizations and variablesin the information set,…

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