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The 'Sophistication' Of Exports: A New Measure Of Product Characteristics

  • Sanjaya Lall (QEH), John Weiss and Jinkang Zhang

Trade data are often classified by product characteristics in the trade, technology and development literature to analyze trade patterns, competitive performance and structural change. However, existing classifications are constrained in that trade data are far more detailed than the industry data on which categories are based (e.g. current classifications only have 4-5 technology groups). We propose a new classification - 'sophistication' - as a means of analyzing product characteristics in great detail, based on the average income of exporting economies. Sophistication captures more than technical characteristics; it includes product differentiation, production fragmentation, resource availability and other factors. However, it has the advantage of providing unique continuous scores for each product at any level of detail. We calculate sophistication scores for 237 exports at the 3-digit SITC level and 766 exports at the 4-digit level for 1990 and 2000 (detailed values can be provided on request). We show sophistication scores for exports by selected countries, technology groups and industries. Our intention is to provide a database for further empirical analysis.

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Paper provided by Queen Elizabeth House, University of Oxford in its series QEH Working Papers with number qehwps123.

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Handle: RePEc:qeh:qehwps:qehwps123
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  1. Thomas Hatzichronoglou, 1997. "Revision of the High-Technology Sector and Product Classification," OECD Science, Technology and Industry Working Papers 1997/2, OECD Publishing.
  2. David Hummels & Jun Ishii & Kei-Mu Yi, 1999. "The nature and growth of vertical specialization in world trade," Staff Reports 72, Federal Reserve Bank of New York.
  3. Sanjaya Lall & Manuel Albaladejo & Jinkang Zhang, 2004. "Mapping fragmentation: Electronics and automobiles in East Asia and Latin America," Oxford Development Studies, Taylor & Francis Journals, vol. 32(3), pages 407-432.
  4. Arndt, Sven W. & Kierzkowski, Henryk (ed.), 2001. "Fragmentation: New Production Patterns in the World Economy," OUP Catalogue, Oxford University Press, number 9780199243310.
  5. Lall, Sanjaya, 1992. "Technological capabilities and industrialization," World Development, Elsevier, vol. 20(2), pages 165-186, February.
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