Abstract
Abstract When individuals in a group have incentives to hoard information, the group may be less effective in achieving its goals. Mixed motives both to communicate and accumulate information create a “social dilemma” in which group and individual goals are in conflict. The results of a series of computer simulations are described in which it is shown that there is a curvilinear relationship between the centralization of a network and its vulnerability to this type of conflict; highly centralized and highly decentralized networks are the least vulnerable.
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