Defining the Social Capital of the Board of Directors: An Exploratory Study

This paper advances the resource dependence and social networks literature by investigating a board?s structural social capital created as a consequence of interlocking directorates. Using approaches and measures developed by social network analysis we compare the interpersonal directorship networks of the top 250 companies in the United States and Australia. We find that the smaller, sparser Australian network is only marginally less compact and connected than the larger US network at the firm level of analysis. However, at the director level of analysis the US network is much larger and more connected than its Australian counterpart. As a result, we argue that scholars studying the resource dependence role of boards should consider using measures of interpersonal links as well as traditional measures of inter-firm links.