English, Article, Journal or magazine article edition: Introducing Imperfect Competition in CGE Models:Technical Aspects and Implications Roberto Roson

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Bookmark: http://trove.nla.gov.au/version/203665
Physical Description
  • preprint
Language
  • English

Edition details

Title
  • Introducing Imperfect Competition in CGE Models:Technical Aspects and Implications
Author
  • Roberto Roson
Physical Description
  • preprint
Notes
  • This paper considers the technical aspects and the consequences, in terms of simulation results and policy assessment, of introducing imperfect competition in a CGE model. The modifications to the standard CGE framework needed to model imperfect competition in some industries are briefly discussed. Next, the paper examines whether, how much and why, those changes may affect the qualitative output a typical simulation experiment. It is argued that technical choices made in designing the model structure may have a significant impact on the model behavior. This is especially evident when the model output of an imperfect competition closure is compared with the one of a standard closure, assuming perfect competition. As an illustration, a simulation of agricultural trade liberalization is analyzed. Results from the same simulation exercise, but produced by alternative model formulations (one standard competitive and three imperfect competition variants) are presented and discussed. It is found that having imperfect competition in a CGE model does matter in terms of simulation results. Furthermore, alternative formulations of imperfect competition typically bring about quite different findings and implications.
  • Computable General Equilibrium Models, Imperfect Competition, Oligopolistic Models, Economies of Scale, Empirical Industrial Organization, Agriculture, Trade Liberalization, Trade Policy.
  • RePEc:ven:wpaper:2006_02
Language
  • English
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