Distribution of roles according to the three methods. Panel A plots the frequency counts for the five GF roles, that is, the number of nodes that predominantly play each role. Panels B and C show the binned scatterplots mapping the distribution of nodes on the two-dimensional space defined by the degree-based method (GA) and the brokerage-based method (HM). The GA method is more restrictive in the definition of global connectors (region 2), with no nodes in that region. The lower panels summarize Zachary’s data. Because this network is undirected, the gatekeeping and representative roles are indistinguishable. The HM sets two nodes clearly apart from the rest; these nodes are the leaders of the two factions identified in the original ethnographic study.