Diaspora Networks, Knowledge Flows and Brain Drain

I summarize key findings from the literature on how distance, relationships, and ethnic ties influence knowledge flows and describe a model that relates emigration and the diaspora to knowledge flows. I then recap a key study that reports evidence of a link from the diaspora and knowledge flows to home country manufacturing productivity. Next, I summarize the ways in which intellectual property protection may influence knowledge flow patterns through incentives (market for ideas) and disincentives (anticommons). Finally, I speculate on how diaspora knowledge flows and intellectual property may alleviate developing country low-productivity equilibria (“poverty traps”) caused by an underinvestment in specialized human capital.