文章基本信息

标题：Accounting for Research and Productivity Growth Across Industries
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作者：L. Rachel Ngai ; Roberto M. Samaniego
期刊名称：CEP Discussion Paper
出版年度：2009
卷号：2009
期号：mar
出版社：Centre for Economic Performance
摘要：What factors underlie industry differences in research intensity and productivity growth? We develop a multi-sector endogenous growth model allowing for industry specific parameters in the production functions for output and knowledge, and in consumer preferences. We find that industry differences in both productivity growth and R&D intensity mainly reflect differences in "technological opportunities", interpreted as parameters of knowledge production. These include the capital intensity of R&D, knowledge spillovers, and diminishing returns to R&D. Among these parameters, we find that the degree of diminishing returns to R&D is the dominant factor when the model is calibrated to account for crossindustry differences in the US.
关键词：Multisector growth, total factor productivity, R&D intensity, technological opportunity