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Measuring the Market Power of the Portuguese Milk Industry

Author

Listed:
  • Margarida De Mello
  • Antonio Brandao

Abstract

This paper is based on the previous work of Appelbaum (Journal of Econometrics, 1979, 9, pp. 283-94; 1982, 19, pp. 287-99). Iwata (Econometrics 1974, 42, pp. 947-66) and Rogers (PhD Dissertation, GeorgeWashington University, 1983).We estimate the degree of market power of an oligopolistic industry, using a linear system and the 2SLS estimation method. Our departure point is the work of Appelbaum (1982) where a 'market power index' is estimated for each of the sample's 25 years. As the market power index depends functionally on the conjectural elasticity, the goal is to obtain annual estimates for that elasticity. For this purpose, Appelbaum defines a non-linear simultaneous-equation system and obtains, with non-linear methods, the conjectural elasticity estimates for each year of the sample. Considering the conjectural elasticity's functional form that Appelbaum adopts, we use a different approach and obtain a linear system that is easier to estimate. Due to the particular features of the industry analysed, we also derive a much simpler form for the equations involved. The model's simplicity is appealing and its generalisation to other industries with homogeneous products may be implemented with ease.

Suggested Citation

  • Margarida De Mello & Antonio Brandao, 1999. "Measuring the Market Power of the Portuguese Milk Industry," International Journal of the Economics of Business, Taylor & Francis Journals, vol. 6(2), pages 209-222.
    • Handle: RePEc:taf:ijecbs:v:6:y:1999:i:2:p:209-222
    DOI: 10.1080/13571519984232
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    References listed on IDEAS

    as
    1. Iwata, Gyoichi, 1974. "Measurement of Conjectural Variations in Oligopoly," Econometrica, Econometric Society, vol. 42(5), pages 947-966, September.
    2. Appelbaum, Elie, 1979. "Testing price taking behavior," Journal of Econometrics, Elsevier, vol. 9(3), pages 283-294, February.
    3. Appelbaum, Elie, 1982. "The estimation of the degree of oligopoly power," Journal of Econometrics, Elsevier, vol. 19(2-3), pages 287-299, August.
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    Cited by:

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    2. Soregaroli, Claudio & Sckokai, Paolo & Moro, Daniele, 2011. "Agricultural policy modelling under imperfect competition," Journal of Policy Modeling, Elsevier, vol. 33(2), pages 195-212, March.
    3. Sandra Rodríuez Piñeros & David K. Lewis, 2005. "Estimating the Imperfection in Sawtimber markets: a case study for the South Pacific Region, Colombia," Lecturas de Economía, Universidad de Antioquia, Departamento de Economía, issue 63, pages 231-260, Julio-Dic.
    4. Daniele Cavicchioli & Luca Cacchiarelli & Alessandro Sorrentino & Roberto Pretolani, 2022. "Should We Cry over the Spilt Milk? Market Power and Structural Change along Dairy Supply Chains in EU Countries," Sustainability, MDPI, vol. 14(8), pages 1-18, April.
    5. Hindriks, F.A. & Nieuwenhuijsen, H.R. & de Wit, G., 2000. "Comparative Advantages in Estimating Markups," Papers 0003/e, NEUHUYS - RESEARCH INSTITUTE FOR SMALL AND MEDIUM.
    6. Rizwan Abbas & Gehad Abdullah Amran & Irshad Hussain & Shengjun Ma, 2022. "A Soft Computing View for the Scientific Categorization of Vegetable Supply Chain Issues," Logistics, MDPI, vol. 6(3), pages 1-17, June.

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