1. Refereed Journal // 2005

    Schooling Quality in Eastern Europe: Educational Production During Transition

    This paper uses student-level TIMSS data to analyze the determinants of schooling quality for seven Eastern European transition countries by estimating educational production functions. The results show…

  2. Refereed Journal // 2005

    What's Spurious? What's Real? Measuring the Productivity Impacts of ICT at the Firm Level

    In order to assess the productivity effects of information and communication technologies (ICT), regressions based on cross-sectional firm-level data may yield unreliable results for the commonly employed…

  3. Refereed Journal // 2005

    Does Experience Matter? Innovations and the Productivity of ICT in German Services

    In this paper, it is argued that investment in information and communication technologies (ICT) are closely linked to complementary innovations and are most productive in firms with experience from earlier…

  4. Contributions to Edited Volumes and Conference Proceedings // 2005

    Innovationen - Herausforderung für den Mittelstand

  5. ZEW Discussion Paper No. 05-65 // 2005

    Using Quantile Regression for Duration Analysis

    Quantile regression methods are emerging as a popular technique in econometrics and biometrics for exploring the distribution of duration data. This paper discusses quantile regression for duration analysis…