In order to understand the different characteristics observed in real-world networks, one needs to analyze how and why … networks form, the impact of network structure on agents' outcomes, and the evolution of networks over time. For this purpose … real-world networks. We also find that there exists a sharp transition in efficiency and network density from highly …

transition from dissortative to assortative networks. This effect can shed light on the distinction between technological and … social networks as it gives a simple mechanism explaining how and why this transition occurs. …

To better understand the way social networks operate in the labor market, we propose two simple models where … strength of weak ties in finding a job because they involve a secondary ring of acquaintances who have contacts with networks …

In this chapter, we provide an overview of research on neighborhoods and social networks and their role in shaping … social networks in crime, education and labor-market outcomes. In particular, we discuss in detail identification problems in …

individual positions in the network. We derive a number of results with regard to equilibrium networks: (i) socialization among … can arise for a wide range of parameters; (iii) integrated networks can be socially preferable to segregated networks. …