Imperfect competition, functional forms, and the size and distribution of research benefits
研究了不同竞争形式下，供给和需求函数形式对研究收益大小和分配的影响，发现不完全竞争下函数形式的选择比完全竞争下重要得多，尤其常弹性模型与线性模型差异显著。
The effects of functional forms for supply and demand on the size and distribution of the returns to research are examined under a range of forms of competition. Under perfect competition, the choice of functional form is relatively unimportant for the estimation of research benefits. Under imperfect competition, the combination of the choice of functional forms for supply and demand and the nature of the research-induced supply shift can have profound implications for the results. Functional form plays a much more important role than in the competitive model. The most important contrast is between the constant elasticity model and the linear model (along with various cases of a generalized linear model). These findings are illustrated using a combination of analytical results and numerical simulations. © 1999 Elsevier Science B.V. All rights reserved.