IDEAS home Printed from
   My bibliography  Save this paper

Das Romer-Modell mit qualitaetsverbesserndem technischem Fortschritt


  • Wolfgang Kornprobst


In bedeutenden Modellen der neuen Wachstumstheorie wird Wachstum entweder durch eine zunehmende Produktvielfalt oder durch Qualitaetsverbesserungen bestehender Produkte modelliert. Wachstum im Romer- Modell (Romer (1990a)) basiert auf einer zunehmenden Anzahl von Produkten, bei Grossman und Helpman wird Wachstum durch eine zunehmende Qualitaet bestehender Produkte generiert (Grossman & Helpman 1991a, Kap. 4). Beide Modelle haben Vorzuege. Das Romer-Modell erklaert die Entwicklung des aggregierten Kapitalstocks besser und kann als erweitertes Solow-Modell mit endogener Erklaerung des technischen Fortschritts verstanden werden. Das Qualitaetenmodell von Grossman und Helpman wird der Sicht Schumpeters eher gerecht, dass Wachstum durch kreative Zerstoerung entsteht. Indem junge Firmen bestehende Produkte verbessern, verdraengen sie die alten Firmen mit den schlechteren Produkten. Die Oekonomie profitiert, weil staendig bessere Produkte verfuegbar werden. Ausserdem wird bei Grossman/Helpman der Forschungsprozess treffender modelliert: Es liegt Unsicherheit ueber den Erfolg von Forschung vor. Im Romer- Modell gibt es diese Unsicherheit nicht. Das vorliegende Modell verbindet die Vorteile beider Modelle. Es behaelt die Struktur des Romer-Modells, implementiert aber Schumpeters Sicht ueber wirtschaftlichen Fortschritt.

Suggested Citation

  • Wolfgang Kornprobst, 2007. "Das Romer-Modell mit qualitaetsverbesserndem technischem Fortschritt," Working Papers 014, Bavarian Graduate Program in Economics (BGPE).
  • Handle: RePEc:bav:wpaper:014_kornprobst

    Download full text from publisher

    File URL:
    File Function: First version, 2007
    Download Restriction: no

    References listed on IDEAS

    1. Benassy, Jean-Pascal, 1998. "Is there always too little research in endogenous growth with expanding product variety?," European Economic Review, Elsevier, vol. 42(1), pages 61-69, January.
    2. Arnold, Lutz G., 2005. "Multi-Country Endogenous Growth Models," University of Regensburg Working Papers in Business, Economics and Management Information Systems 404, University of Regensburg, Department of Economics.
    3. Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth through Creative Destruction," Econometrica, Econometric Society, vol. 60(2), pages 323-351, March.
    4. Mark Bils & Peter J. Klenow, 2001. "Quantifying Quality Growth," American Economic Review, American Economic Association, vol. 91(4), pages 1006-1030, September.
    5. Gene M. Grossman & Elhanan Helpman, 1991. "Quality Ladders in the Theory of Growth," Review of Economic Studies, Oxford University Press, vol. 58(1), pages 43-61.
    6. Romer, Paul M, 1990. "Endogenous Technological Change," Journal of Political Economy, University of Chicago Press, vol. 98(5), pages 71-102, October.
    7. Segerstrom, Paul S, 1998. "Endogenous Growth without Scale Effects," American Economic Review, American Economic Association, vol. 88(5), pages 1290-1310, December.
    8. repec:kap:iaecre:v:10:y:2004:i:4:p:257-264 is not listed on IDEAS
    9. William D. Nordhaus, 1998. "Quality Change in Price Indexes," Journal of Economic Perspectives, American Economic Association, vol. 12(1), pages 59-68, Winter.
    10. Arnold, Lutz G. & Kornprobst, Wolfgang, 2006. "The Dynamics of the Romer R&D Growth Model with Quality Upgrading," University of Regensburg Working Papers in Business, Economics and Management Information Systems 413, University of Regensburg, Department of Economics.
    11. Federico Etro, 2004. "Innovation by leaders," Economic Journal, Royal Economic Society, vol. 114(495), pages 281-303, April.
    12. Miguel-Angel Martín & Agustín Herranz, 2004. "Human capital and economic growth in Spanish regions," International Advances in Economic Research, Springer;International Atlantic Economic Society, vol. 10(4), pages 257-264, November.
    Full references (including those not matched with items on IDEAS)

    More about this item

    JEL classification:

    • O30 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - General
    • O40 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - General


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:bav:wpaper:014_kornprobst. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Dominique Lemmermann). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.