We introduce a model of proportional growth to explain the distribution P(g) of business firm growth rates. The model predicts that P(g) is Laplace in the central part and depicts an asymptotic power-law behavior in the tails with an exponent ζ = 3. Because of data limitations, previous studies in this field have been focusing exclusively on the Laplace shape of the body of the distribution. We test the model at different levels of aggregation in the economy, from products, to firms, to countries, and we find that the its predictions are in good agreement with empirical evidence on both growth distributions and size-variance relationships.
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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number
15983.
Length: Date of creation: 31 Aug 2006 Date of revision: Publication status: Published in The European Physical Journal B 2.57(2007): pp. 127-130 Handle: RePEc:pra:mprapa:15983
Find related papers by JEL classification: D21 - Microeconomics - - Production and Organizations - - - Firm Behavior L25 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Performance E01 - Macroeconomics and Monetary Economics - - General - - - Measurement and Data on National Income and Product Accounts and Wealth L00 - Industrial Organization - - General - - - General L60 - Industrial Organization - - Industry Studies: Manufacturing - - - General L65 - Industrial Organization - - Industry Studies: Manufacturing - - - Chemicals; Rubber; Drugs; Biotechnology L16 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Industrial Organization and Macroeconomics; Macroeconomic Industrial Structure E17 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Forecasting and Simulation
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