The unintended impacts of formal credit programmes on social networks: Evidence from India

The introduction of financial institutions in communities may generate long-lasting externalities, including losses in informal social linkages
Read “Changes in social network structure in response to exposure to formal credit markets” by Abhijit Banerjee, Emily Breza, Arun G. Chandrasekhar, Esther Duflo, Matthew O. Jackson, and Cynthia Kinnan here.