In a canonical model of collective action, individual contribution to collective action is negatively correlated with group size. Yet, empirical evidence on the group size effect has been mixed, partly due to heterogeneities in group activities. In this paper, we first construct a simple model...

While previous studies evaluate the impact of social capital on development outcomes, there are very few empirical studies on determinants of social capital formation. We use unique long panel data from Sri Lanka to examine the mechanism of social capital formation in an imperfect credit market....