Collaborative Research: Innovation, Spillovers, and the Dynamics of Competition: An Empirical Study of the Hard Disk Industry

这项研究的目的是使用行业差异化需求的结构模型和关于价格、数量和产品特征的详细产品级数据来分析硬盘行业的竞争动态。该模型将用于估计产品和加价之间相对于边际成本的交叉价格弹性。然后，边际成本估算将被用来观察垄断加价的下降速度。这将使调查人员看到，由于生产率提高而导致的价格下降是由于在实践中学习，还是由于竞争而减少了加价。交叉价格弹性将被用来分析“溢出效应”：其他公司的研发活动对每家公司生产率的影响。通过将所有这些估计汇总在一起，研究人员可以将社会回报率与私人研发回报率进行比较。

The purpose of this research is to analyze the dynamics of competition in the hard disk industry using a structural model of differentiated demand for the industry and detailed product-level data on price, quantity, and product characteristics. The model will be used to estimate cross price elasticities between products and markups over marginal cost. The marginal cost estimates will then be used to observe the rate of decline of monopoly markups. This will allow the investigators to see whether declining prices due to increased productivity is due to learning by doing or reduced markups due to competition. The cross price elasticities will be used to analyze "spillovers": the effects on each firm's productivity of R&D activity by other firms. By putting all these estimates together the investigators can compare the social rate of return with the private rate of return to R&D.