R&D Appropriability, Opportunity, and Market Structure: New Evidence on Some Schumpeterian Hypotheses
利用Levin等人对130个行业研发主管的调查数据，重新检验了熊彼特关于市场集中度影响研发和技术进步的假说。
One of the largest bodies of literature in the field of industrial organization is devoted to the interpretation and testing of several hypotheses advanced by Joseph Schumpeter (1950) concerning innovation and industrial market structure. One set of hypotheses focuses on the role of firm size as a determinant of R&D spending and the rate of technological advance. Another set focuses on the effect of market concentration on R&D and technological advance. In this paper, we reexamine the latter set of hypotheses at the industry level, using new data on R&D appropriability and technological opportunity collected by Levin et al. (1984) in a survey of R&D executives in 130 industries.