'The economic importance of social interactions not mediated by the market has long been recognized. However, it is only the emergence of network analysis that has supplied a useful method of study. The editors have performed a signal service by their anthology of important articles. They have...

We consider a model where each individual (or ethnic minority) is embedded in a network of relation-ships and decides whether or not she wants to be assimilated to the majority norm. Each individual wants her behavior to agree with her personal ideal action or norm but also wants her behavior to...

The aggregate economic impact of any developmental project depends on its effects within the chosen administrative region as well as its economic spillovers into other regions. However, little is known about how these spillovers propagate through geographic, ethnic and road networks. In this...

We develop a dynamic network formation model that can explain the observed nestedness in real-world networks. Links are formed on the basis of agents' centrality and have an exponentially distributed life time. We use stochastic stability to identify the networks to which the network formation...

We analyze the intergenerational transmission of the strength of religion focusing on the interplay between family and social influences. We find that parental investment in transmitting religious values and peers’ religiousity are complements. The relative importance of these socialization...

We study how friendship shapes students' political opinions in a natural experiment. We use the indicator whether two students were exogenously assigned to a short-term \integration group", unrelated to scholar activities and dissolved before the school year, as instrumental variable for their...