Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Applying survival analysis to a large loan-level dataset for regulatory purposes on group loans provided by Mexican banks, I find that ex-post credit risk is subject to substantial geographic spillover effects. Potential underlying mechanisms include contagious defaulting behavior, which bears the risk of proliferating into a repayment crisis in the event of an economic or political shock, as experiences from similar markets suggest.