We establish new empirical facts, in line with the recent theoretical literature on infidelity. Infidelity displays seasonality and state dependence. In the US socioeconomic status is not a driver of infidelity and females and males are equally likely to be unfaithful.

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...

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...