Online shopping surged in the initial months of the COVID-19 pandemic, accelerating the pre-pandemic shift toward increased online consumer activity. This trend fed into concerns over the success of top retailers at the expense of smaller ones. Further, it raised questions of whether consumers...

This paper estimates the effect of alcohol use on consumption of hard drugs using the exogenous decrease in the cost of accessing alcohol that occurs when individuals reach the minimum legal drinking age. Using a regression discontinuity design and the National Longitudinal Study of Youth 1997,...