The role of friends in the US opioid epidemic is examined. Using data from the National Longitudinal Survey of Adolescent Health (Add Health), adults aged 25-34 and their high school best friends are focused on. An instrumental variable technique is employed to estimate peer effects in opioid...

This paper provides a causal estimate of labor productivity in maternity units. We consider an Italian law that defines the staffing requirements of maternity wards according to the annual number of births. We exploit these discontinuities in the availability of medical staff induced by the law...

This is a replication study of Cook et al.(2023), a paper that investigates the determinants of access to nondiscriminatory public accommodations for African-Americans before the 1964 Civil Rights Act. They utilize the Negro Motorist Green Books and World War II casualty data to examine the...