Aggregation Effects And Panel Data Estimation Problems: An Investigationof the R&D Intensity Decision
收藏NBER1979-05-01 更新2025-01-04 收录
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https://www.nber.org/papers/w0344
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资源简介：
This paper considers why the determinants of the inter- and intra-industry variance in R&D intensity in U.S. manufacturing differ markedly even though response parameters are similar across industries. A similar aggregation effect is noted by Grunfeld and Griliches (1960), and this paper gives that
提供机构：
美国国家经济研究局
创建时间：
1979-05-01
