中文摘要：

技术创新日益受到重视，特别是跨产业合作已成为企业突破自身资源困境的有效途径之一。为了避免可能的投机行为，成员企业往往做出事前承诺。然而如何承诺才能有效避免伙伴投机，进而提高合作绩效？本文将据此考察上游成本和联合创新水平不确定时的策略承诺，并分析承诺对合作创新行动的影响。本文提出状态依赖承诺的概念，并通过研究发现策略承诺能够降低不确定性所带来不利影响，刺激创新投入，并提高合作绩效——特别是对上游的激励作用更强。本文从理论上指出策略承诺在合作创新中的积极作用，特别是对供应商参与新产品研发的重要激励作用。

英文摘要：

Technology innovation has been paid more attention to, and cooperation between enterprises from dif- ferent industries have become one of the most efficient ways to break the predicaments of resource dilemmas for enterprises. However, opportunism behavior will decrease cooperative motivation and alliance stability. Therefore enterprises usually make a commitment in advance to avoid opportunism. What kind of commitment should be made to effectively avoid opportunism behavior of business partners and improve cooperation performance.9 This paper focus on the strategy commitment with uncertain cost and uncertain joint innovation level, and analyze its impact to cooperation innovation behavior. This paper also puts forward the concept of state dependent commit- ment, and find out that strategy commitment can decrease effect from uncertainty, increase innovation input and improve cooperation performance, especially for the upstream firms. This paper theoretically proposes strategy commitment＇ s positive role in cooperation innovation, especially in stimulating supplier in participating in the new product development and research.