The Effects of R&D, Foreign Technology Purchase, and Domestic and International Spillovers on Productivity in Indian Firms
利用1974-75至1981-82年印度企业面板数据，估计了研发支出、技术购买以及国内外研发溢出对产出的影响，发现技术购买的私人回报高且显著，而自身研发回报较低且常不显著，同时存在国内外研发溢出证据。
Using panel data on Indian firms from 1974-75 to 1981-82, the authors provide estimates of the impact on output of Indian firms' R&D expenditures, their technology purchases, and international and domestic R&D spillovers. The private returns to technology purchases are estimated to be high and statistically significant, while the private returns to firms' own R&D expenditures are somewhat lower and are often insignificant. There is evidence of both international and domestic R&D spillovers. The estimates permit estimation of total factor productivity growth in the period preceding India's industrial liberalization policies. Copyright 1996 by MIT Press.