Collinearity in Linear Structural Models of Market Power
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The well-known structural model used to estimate market power suffers from a severe collinearity problem if both the marginal cost and demand equations are linear. If the equations hold exactly, the variables are perfectly collinear so the model cannot be estimated. If the true linear model equations hold with errors, one can estimate the equations, but the estimated coefficients are likely to be highly unstable and unreliable due to nearly perfect collinearity.
KeywordsCollinearity Estimation Market power Structural model
JEL ClassificationL13 C1
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- Bresnahan T. F. (1989) Studies of industries with market power. In: Schmalensee R., Willig R. (eds) Handbook of industrial organization. North Holland, New York, NY, pp 1011–1057Google Scholar
- Deodhar S. Y., Sheldon I. M. (1997) Market power in the world market for soymeal exports. Journal of Agricultural and Resource Economics 22(1): 78–86Google Scholar
- Greene W. H. (2012) Econometric analysis (7th ed.). Prentice-Hall, New York, NYGoogle Scholar
- Just R. E., Chern W. S. (1980) Tomatoes, technology, and oligopsony. Bell Journal of Economics and Management Science 11(2): 584–602Google Scholar