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This paper investigates how the structure of the informal communication network that results from efforts to coordinate task interdependence between design teams in complex product development projects moderates the effect of task interdependence on interteam communication. Drawing on theoretical mechanisms from the social network and knowledge transfer literature, as well as on recent empirical advances in exponential random graphs models of social networks, we examine how the presence of a common third party in the communication network affects the likelihood of technical communication between interdependent teams designing the components of a large commercial aircraft engine. Although task interdependence has a strong and significant effect on the likelihood of communication between teams, this effect is moderated by the presence of common third parties. The nature of this moderation …