Lending to the poor is expensive due to high screening, monitoring, and enforcement costs. Group lending advocates believe lenders overcome this by harnessing social connections. Using data from FINCA-Peru, I exploit a quasi-random group formation process to find evidence of peers successfully...

Group liability is often portrayed as the key innovation that led to the explosion of the microcredit movement, which grew with the Grameen Bank in the 1970s and continues on today with hundreds of institutions around the world. Group liability claims to improve repayment rates and lower...

We study how the diffusion of broadband Internet affects social capital using two data sets from the UK. Our empirical strategy exploits the fact that broadband access has long depended on customers position in the voice telecommunication infrastructure that was designed in the 1930s. The actual...

We analyze the long-term impact of the resettlement of the Sudetenland after World War~II on residential migration. This event involved expulsion of ethnic Germans and almost complete depopulation of an area of a country and its rapid resettlement by 2 million Czech inhabitants. Results based on...

Theoretical models of social capital (David, Janiak, and Wasmer 2010; Bräuninger and Tolciu 2011) predict that communities may find themselves in one of two equilibria: one with a high level of local social capital and low migration or one with a low level of local social capital and high...

We exploit a historical experiment that occurred in Czechoslovakia after World War Two to study the drivers of social capital accumulation in an extremely unfavorable environment. Between 1945 and 1948, the Sudetenland became the scene of ethnic cleansing, with the expulsion of nearly three...

Research on 'trust' now forms a prominent part of the research agenda in history and the social sciences. Although this research has generated useful insights, the idea of trust has been used so widely and loosely that it risks creating more confusion than clarity. This essay argues that to the...

Questions remain as to whether results from experimental economics games are generalizable to real decisions in non-laboratory settings. Furthermore, important questions persist about whether social capital can help solve seemingly missing credit markets. I conduct two experiments, a Trust game...

Group liability in microcredit purports to improve repayment rates through peer screening, monitoring, and enforcement. However, it may create excessive pressure, and discourage reliable clients from borrowing. Two randomized trials tested the overall effect, as well as specific mechanisms. The...