, Volume 94, Issue 3, pp 833–849 | Cite as

Produce patents or journal articles? A cross-country comparison of R&D productivity change

  • Chiang-Ping Chen
  • Jin-Li Hu
  • Chih-Hai Yang


This paper compares R&D productivity change across countries considering the fact that national R&D expenditure may produce multiple outputs, including patents and journal articles. Based on the concept of directional distance function and Luenberger productivity index, this paper develops a Luenberger R&D productivity change (LRC) index and then decomposes it into R&D efficiency change (catch-up effect) and R&D technical change (innovation effect). Utilizing a panel dataset of 29 countries over the 1998–2005 period to implement the empirical estimation, the results show that the R&D productivity growth is mainly attributed to the innovation effect; meanwhile, non-OECD countries have better performance on both efficiency change and technical change than their OECD counterparts. Moreover, patent-oriented R&D productivity growth serves as the main source of national R&D productivity growth than the journal article-oriented one.


R&D productivity change Patents Journal articles 

JEL Classification

C67 O33 O57 


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  1. 1.Taiwan Institute of Economic ResearchTaipeiTaiwan, ROC
  2. 2.National Chiao Tung UniversityHsinchuTaiwan, ROC
  3. 3.Department of EconomicsNational Central UniversityJhongli 320Taiwan, ROC

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