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Dynamische Interaktionen zwischen Innovationsplanung und -realisation / Dynamic Interactions between Planning and Realization of Innovations


  • Flaig Gebhard

    (Dipl.-Volkswirt Horst Rottmann, Universit├Ąt Augsburg, Memminger Str. 14, D-86159 Augsburg)

  • Rottmann



Starting from some empirical and theoretical considerations we specify a system of simultaneous equations for planning and realization of innovations with dynamic spillovers. We estimate different versions of the model with a bivariate dynamic Random-Effects-Probit-Model. We control for a possible correlation of the explaining variables with the unobserved firm-specific effects. For that purpose we use panel data of the IFO-Konjunkturtest combined with data of the National Income Accounts. It turns out that dynamic spillovers and unobserved heterogeneity exercise a significant influence on the process of innovation. The absolute firm size affects the innovative performance decisively while industry concentration results unimportant.

Suggested Citation

  • Flaig Gebhard & Rottmann, 1994. "Dynamische Interaktionen zwischen Innovationsplanung und -realisation / Dynamic Interactions between Planning and Realization of Innovations," Journal of Economics and Statistics (Jahrbuecher fuer Nationaloekonomie und Statistik), De Gruyter, vol. 213(5), pages 545-560, October.
  • Handle: RePEc:jns:jbstat:v:213:y:1994:i:5:p:545-560

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