Knowledge and networks: An experimental test of how network knowledge affects coordination

Scholars in the social sciences use network theory to study a range of collective action problems. Often the goal is to identify how the structure of the network affects efforts to coordinate or cooperate, and research suggests that adding connections to a network can improve the performance of groups faced with such tasks. On the other hand, theory and empirics also suggest that additional connections can degrade the performance of a network. If connections can have negative effects then it is important to consider if there are alternatives to adding connections to a network that can also improve network performance. Because a primary function of connections in a network is to disseminate information, providing individuals with more information about the network may act as a substitute for adding connections to a network. We test experimentally whether providing subjects with more information about the structure of networks can improve coordination. We find that a more complete view of the network leads to faster coordination, but the magnitude of this effect depends on network structure. These results suggest that changing what actors know about a network can improve outcomes without having to add connections that may impede overall performance.

► Adding connections to a network can reduce overall performance of the network.
► One alternative to changing network structure is to give actors a more complete view of the network.
► Experimental results indicate that a more complete network view can facilitate coordination.
► Effect of additional knowledge of the network depends on network structure.
► Results can help both empirical analysis of networks and their design.