The Adoption of Product Innovations with Spillovers

技術外溢與產品創新

謝修(Shiou Shieh)

《經濟論文》 30卷2期 (2002/06) Pp. 207-245

https://doi.org/10.29628/AEP.200206.0003

摘要

本文探討技術外溢如何影響雙占廠商的產品創新。本文發現，不論外溢程度大小，隨創新成本自低而高，吾人可觀察到兩廠創新、一廠創新以及兩廠都不創新的均衡結果。但相對而言，外溢程度大時，吾人較易觀察到兩廠皆創新或皆不創新的均衡，而較不易觀察到只有一廠創新的均衡；外溢程度小時，情況則相反。本文進一步以比較靜態分析檢視技術外溢程度以及產品創新幅度對廠商從事產品創新意願之影響。

關鍵字

技術外溢,技術採用,產品創新

並列摘要

We analyze duopolistic firms' adoption of a product innovation in a vertical differentiation model with technological spillovers. We find that regardless of the level of spillovers, the equilibrium adoption patterns are characterized by global, partial, and no adoption for low, intermediate, and high adoption costs, respectively. The distribution of adoption patterns, however, differs across different ranges of spillovers. In particular, we find that equilibrium adoption patterns center on global and no adoption in the presence of intermediate and large spillovers, while the opposite is true for small spillovers. Some comparative statics are performed to further illustrate the effects of spillovers and innovation size on technology adoption.

並列關鍵字

Spillovers,Technology adoption,Product innovation

參考文獻

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