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Government expenditure, capital adjustment, and economic growth


  • Ingrid Ott

    (University of Lueneburg, Germany)

  • Susanne Soretz

    (University of Hannover, Germany)


We analyze within a dynamic model the growth impact of private capital investment if the accompanying adjustment costs are a function of governmental activity. The impact of the productive public input is twofold: it (i) enhances private capital productivity and (ii) reduces adjustment costs. We derive the equilibrium in which the investment ratio is constant and determine the equilibrium growth rate. Carrying out comparative dynamic analysis allows us to show that better infrastructure endowment unequivocally spurs the equilibrium growth rate whereas the result becomes ambiguous with respect to the impact of rivalry. Since a reduction in congestion lowers the individually perceived capital productivity such a policy may reduce the equilibrium growth rate. While it is not possible to find closed solutions of the model we simulate the growth rate for different parameter constellations

Suggested Citation

  • Ingrid Ott & Susanne Soretz, 2006. "Government expenditure, capital adjustment, and economic growth," Computing in Economics and Finance 2006 362, Society for Computational Economics.
  • Handle: RePEc:sce:scecfa:362

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    Cited by:

    1. Francesco Aiello & Alfonsina Iona & Leone Leonida, 2012. "Regional infrastructure and firm investment: theory and empirical evidence for Italy," Empirical Economics, Springer, vol. 42(3), pages 835-862, June.

    More about this item


    Congested public inputs; adjustment costs; economic growth;

    JEL classification:

    • H54 - Public Economics - - National Government Expenditures and Related Policies - - - Infrastructures
    • D21 - Microeconomics - - Production and Organizations - - - Firm Behavior: Theory


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