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A Generalized Index of Diversification: Trends in U.S. Manufacturing

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Author Info
Gollop, Frank M
Monahan, James L
Abstract

An index of diversification suitable for manufacturing plants and firms is defined as a function of product number, distribution, and dissimilarity. A novel feature of the index is its continuous treatment of product heterogeneity. Using "Census of Manufactures" data files, the index is constructed for each establishment and each enterprise surveyed in the 1963-1982 censuses. Results are reported at the 2-digit SIC level. While quantifying the upward trend in enterprise diversification, the index reveals an ubiquitous and persistent decline in establishment diversification. Over time, enterprises are shifting toward a more diverse portfolio of increasingly homogeneous plants. Technical economies of scope appear to play little role in explaining the measured increase in enterprise diversification. Copyright 1991 by MIT Press.

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Publisher Info
Article provided by MIT Press in its journal Review of Economics & Statistics.

Volume (Year): 73 (1991)
Issue (Month): 2 (May)
Pages: 318-30
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Handle: RePEc:tpr:restat:v:73:y:1991:i:2:p:318-30

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  1. Nancy L. Rose & Andrea Shepard, 1994. "Firm Diversification and CEO Compensation: Managerial Ability or Executive Entrenchment?," NBER Working Papers 4723, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  2. Stephen Redding & Andrew Bernard & Peter Schott, 2005. "Product Choice and Product Switching," Working Papers 05-22, Center for Economic Studies, U.S. Census Bureau. [Downloadable!]
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  3. Kugler, Maurice & Verhoogen, Eric A., 2009. "The Quality-Complementarity Hypothesis: Theory and Evidence from Colombia," CEPR Discussion Papers 7119, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
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  4. Andrew B. Bernard & J. Bradford Jensen, 2006. "Firm Structure, Multinationals, and Manufacturing Plant Deaths," Peterson Institute Working Paper Series WP06-7, Peterson Institute for International Economics. [Downloadable!]
    Other versions:
  5. Robert H Mcguckin, 1991. "Multiple Classification Systems For Economic Data: Can A Thousand Flowers Bloom? And Should They?," Working Papers 91-8, Center for Economic Studies, U.S. Census Bureau. [Downloadable!]
  6. Andrew B. Bernard & Stephen J. Redding & Peter K. Schott, 2006. "Multi-Product Firms and Product Switching," NBER Working Papers 12293, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
    Other versions:
  7. Robert H Mcguckin, 1993. "The Importance of Establishment Data in Economic Research," Working Papers 93-10, Center for Economic Studies, U.S. Census Bureau. [Downloadable!]
  8. Jovanovic, B., 1993. "The Diversification of Production," Working Papers 93-11, C.V. Starr Center for Applied Economics, New York University. [Downloadable!]
  9. Michael D. Giandrea, 2006. "Industry Competition and Total Factor Productivity Growth," Working Papers 399, U.S. Bureau of Labor Statistics. [Downloadable!]
  10. Drescher, Larissa S. & Goddard, Ellen, 2008. "Comparing Predictors of Diet Quality in Canada Over Time Under Consideration of Altering Food Guides," Staff Paper Series 52091, University of Alberta, Department of Rural Economy. [Downloadable!]
  11. Alvin J. Silk & Ernst R. Berndt, 1994. "Costs, Institutional Mobility Barriers, and Market Structure: Advertising Agencies as Multiproduct Firms," NBER Working Papers 4826, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  12. Navon, Guy, 2009. "Human Capital Spillovers in the Workplace: Labor Diversity and Productivity," MPRA Paper 17741, University Library of Munich, Germany. [Downloadable!]
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