This research studies the intermetropolitan migration of 18- to 55-year-old American workers before and after COVID-19. Using the conditional logit model, we evaluate the relative importance of Facebook social connection, economic, and demographic factors on individual decisions over where to...

We study whether interactions between individuals with different skills, expertise and perspectives influenced innovation in U.S. counties from 1850 to 1940. We introduce and validate a new measure of social interactional diversity based on the distribution of surnames: lower surname diversity...

We reconsider de Marti and Zenou (2017) model of friendship network formation where individuals belong to two different communities and costs of forming links depend on community memberships. Many inefficient friendship networks such as segregation can arise when all individuals are myopic. Once...

In this paper, we study how exogenously given social relations (e.g. friendship) among the firm owners/managers influence the formation of an R&D collaboration network among the firms. In our framework, firms, prior to competing in the market, invest in R&D collaborations with others which...