Bridging in social networks: Who are the people in structural holes and why are they there?

The current paper examines the psychological characteristics of people who link tightly connected cliques to each other with friendship ties. Based on the work of sociologist Georg Simmel, I argue that these people are characterized by two separate motivations, which I call entrepreneurial and relationship- building motivations. Using a complete network from a heterogeneous class of Jewish-, Arab-, and Druze-Israelis, I provide the first empirical evidence of their existence. Gould and Fernandez's brokerage roles were calculated for each participant, and triad proportions from each brokerage type were correlated with well-established psychological questionnaires. Results indicate the existence of two psychologically distinct network orientations, easily interpretable in terms of Simmel's analysis of processes in triads.