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Products and Productivity

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  • Andrew B. Bernard
  • Stephen Redding
  • Peter K. Schott

Abstract

Firms' decisions about which goods to produce are often made at a more disaggregate level than the data observed by empirical researchers. When products differ according to production technique or the way in which they enter demand, this data aggregation problem introduces a bias into standard measures of firm productivity. We develop a theoretical model of heterogeneous firms endogenously self-selecting into heterogeneous products. We characterize the bias introduced by unobserved variation in product mix across firms, and the implications of this bias for identifying firm and industry responses to exogenous policy shocks such as deregulation. More generally, we demonstrate that product switching gives rise to a richer set of industry-level dynamics than models where firm product mix remains fixed.

Suggested Citation

  • Andrew B. Bernard & Stephen Redding & Peter K. Schott, 2005. "Products and Productivity," CEP Discussion Papers dp0699, Centre for Economic Performance, LSE.
  • Handle: RePEc:cep:cepdps:dp0699
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    More about this item

    Keywords

    Product choice; Productivity; Deregulation; Industry Evolution;
    All these keywords.

    JEL classification:

    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
    • D21 - Microeconomics - - Production and Organizations - - - Firm Behavior: Theory
    • L60 - Industrial Organization - - Industry Studies: Manufacturing - - - General

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