Kostov, Philip and Patton, Myles and Moss, Joan and McErlean, Seamus (2006): Does Gibrat’s law hold amongst dairy farmers in Northern Ireland?
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This paper tests whether the Law of Proportionate Effects (Gibrat, 1931), which states that farms grow at a rate that is independent of their size, holds for the dairy farms in Northern Ireland. Previous studies have tended to concentrate on testing whether the law holds for all farms. The methodology used in this study permits investigation of whether the law holds for some farms or all farms according to their size. The approach used avoids the subjective splitting of samples, which tends to bias results. Additionally we control for the possible sample selection bias. The findings show that the Gibrat law does hold except in the case of small farms. This is in accordance with previous findings that Gibrat’s law tends to hold when only larger farms are considered, but tends to fail when smaller farms are included in the analysis. Implications and further extensions, as well as some alternatives to the proposed methodology are discussed.
|Item Type:||MPRA Paper|
|Institution:||Queens University Belfast|
|Original Title:||Does Gibrat’s law hold amongst dairy farmers in Northern Ireland?|
|Keywords:||law; quantile regression; Integrated conditional moments test|
|Subjects:||O - Economic Development, Innovation, Technological Change, and Growth > O4 - Economic Growth and Aggregate Productivity > O49 - Other
C - Mathematical and Quantitative Methods > C1 - Econometric and Statistical Methods and Methodology: General > C14 - Semiparametric and Nonparametric Methods: General
C - Mathematical and Quantitative Methods > C1 - Econometric and Statistical Methods and Methodology: General > C12 - Hypothesis Testing: General
|Depositing User:||Philip Kostov|
|Date Deposited:||01. Jun 2007|
|Last Modified:||18. Feb 2013 23:34|
Allanson, P. 1992. Farm size structure in England and Wales 1939-89. Journal of Agricultural Economics 43(2), 137-148. Barrodale, I., and Roberts, F. 1974. Solution of an overdetermined system of equations in the L1 norm. Communications of the ACM 17, 319-320. Bierens H. J. and Ploberger, W. 1997. Asymptotic theory of integrated conditional moment tests. Econometrica 65, 1129-1151. Bierens, H. J. and Ginther, D. K. 2001. Integrated conditional moment testing of quantile regression models. Empirical Economics 26: 307-324. Bremmer, J., Oude Lansink, A.G.J.M., Olson, K.D., Baltussen, W.H.M., and Huire, R.B.M. 2002. Analysis of farm development in Dutch agriculture and horticulture. Paper presented at 13th Congress of the International Farm Management Association (IFMA) in National Sports and Conference Centre Papendal, Wageningen, The Netherlands, July 7-12, 2002. Buchinsky, M. 1998. The dynamics of changes in the female wage distribution in the USA: a quantile regression approach. Journal of Applied Econometrics 13, 1—30. Buchinsky, M. 2001. Quantile regression with sample selection: estimating women's return to education in the U.S.. Empirical Economics, 26(1), 87-113. Chernozhukov, V. 2000a. Conditional extremes and near-extremes, MIT Dept. of Economics Working Paper No. 01-21. Chernozhukov, V. 2000b. Conditional extremes and near-extremes: concepts, asymptotic theory and economic applications, unpublished PhD Dissertation, Stanford University. Chernozhukov, V. and Umantsev, L. 2001. Conditional value-at-risk: aspects of modeling and estimation. Empirical Economics 26(1), 271 - 292 Clarke, J.S., Fulton, M. and Brown, D.J. 1992. Gibrat’s law and farm growth in Canada. Canadian Journal of Agricultural Economics 40, 55-70. Davies, S. and Lyons, B. (1982). Seller concentration: the technological explanation and demand uncertainty. Economic Journal 92, 903-919. Gibrat, R. 1931. Les Inegalites Economiques. Librairie du Recueil Sirey. Paris. Glauben, T., Tietje, H. and Weiss, C. 2003. Agriculture on the move: exploring regional differences in farm exit rates. Working Paper EWP 0308. Dept. of Food Economics and Consumption Studies, University of Kiel. Hardwick, P. and Adams, M. 2002. Firm size and growth in the UK life insurance industry. The Journal on Risk and Insurance 69(4), 577-593 Heckman, J. J. 1979. Sample selection bias as a specification error. Econometrica 47(2), 153-161. Key, N. and Roberts, M.J. 2003. Government payments and structural change in agriculture. Paper presented at the Annual Meeting of the AAEA, Montreal, Quebec, July 27-30, 2003. Kimhi, A. and Bollman, R. 1999. Family farm dynamics in Canada and Israel: the case of farm exits. Agricultural Economics 21, 69-79. Knight, K, Bassett, G. W. and Tam, M. 2002. Quantile models and estimators for data analysis, Metrika 55, 17-26. Koenker, R. and Basset, G. 1978. Regression quantiles. Econometrica 46, 33-50. Koenker, R. and Xiao, Z. 2000. Inference on the quantile regression process. Econometrica 81, 1583–1612. Khmaladze, E. 1981. Martingale approach in the theory of goodness-of-fit tests. Theory of Probability and its Applications 26, 240–257. Lotti, F., Santarelli, E. and Vivarelli, M. 2003. Does Gibrat's Law hold among young, small firms?. Journal of Evolutionary Economics 13(3), 213-235. McErlean, S., Moss, J. Patton, M. Kostov, P. and Jack, C. 2004. Investigating the determinants of farm growth and survival, Paper presented at the AES annual conference, Imperial College, London, April. Shapiro, D., Bollman, R.D. and Ehrensaft, P. 1987. Farm size and growth in Canada. American Journal of Agricultural Economics 69, 477-483. Sutton, J. 1997. Gibrat’s Legacy. Journal of Economic Literature 35, 40-59. Upton, M. and Haworth, S. 1987. The growth of farms. European Review of Agricultural Economics 14, 351-366. Weiss, C.R. 1998. Size, growth, and survival in the upper Austrian farm sector. Small Business Economics 10, 305-312. Weiss, C.R. 1999. Farm growth and survival: econometric evidence for individual farms in Upper Austria. American Journal of Agricultural Economics 81, 103-116. Zheng J. X. (1998). A consistent nonparametric test of parametric regression models under conditioning quantile restrictions. Econometric Theory 14, 123-138.