摘要： 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. 其他題名： Scientometrics 出版者： Dordrecht: Springer Netherlands 出版日期： 2013-03-01 出處： Scientometrics, 2013-03, Vol.94 (3), p.833-849 版權： Akadémiai Kiadó, Budapest, Hungary 2012 版權： 2015 INIST-CNRS 識別號： ISSN: 0138-9130 識別號： EISSN: 1588-2861 識別號： DOI: 10.1007/s11192-012-0811-9 識別號： CODEN: SCNTDX
