This paper proposes new centrality measures to characterise the ‘key class’, whose removal results in maximal reduction in the network activity, when agents in a network are sorted into role-equivalent classes. The notion of role-equivalence is defined through the graph-theoretical concept...

We use cross-sectional data from 93 countries to study the relationship between how much redistribution citizens of different socioeconomic status want and how much the government actually redistributes. We focus on redistribution because it is an outcome for which there is a natural class...