Partner-based opportunism,interface structure,and performance efficiency in upstream and downstream alliance activities contexts

Few alliance studies have theorized that opportunisms effect on performance efficiency is contingent on other factors. Our study posits that alliance partner size and no end-point serve as interface structure mechanisms that condition the efficiency outcomes of partner-based opportunism in alliances. We argue that the direct effect of partner-based opportunism, and the moderation effects of alliance partner size and no end-point, differ according to the alliance activities context (i.e., upstream vs. downstream). Our hypotheses were tested using a survey of 361 alliances. We observe that partner-based opportunism is indeed associated with performance inefficiencies. Further, while alliance partner size has a nonsignificant moderating effect, no end-point has a positive moderating effect, on the relationship between partner-based opportunism and efficiency; that is, the negative link becomes less negative for no end-point alliances. We find that the negative performance relevance of partner-based opportunism remains significant among upstream alliances, but drops to nonsignificance for downstream ones. We show that alliance partner size has a negative moderating effect on the link partner-based opportunism to performance efficiency among downstream, but not upstream, alliances. Lastly, we find that the positive moderating effect of no end-point is significant among upstream, but not downstream, alliances. Our results generate important implications for managers' efforts to design and govern alliances.