Teens are risky drivers and often subject to extra restrictions. We examine the effects of an Australian intervention banning first-year drivers from carrying multiple passengers between 11:00pm and 4:59am, which had represented 3% of their accidents and 18% of their fatalities. Using daytime...

The U.S. opioid crisis is now driven by fentanyl, a powerful synthetic opioid that currently accounts for 90% of all opioid deaths. Fentanyl is smuggled from abroad, with little evidence on how this happens. We show that a substantial amount of fentanyl smuggling occurs via legal trade flows,...

Cost-of-illness (COI) studies seemingly provide a solid foundation for quantifying the potential benefits of illicit drug policy interventions that reduce drug use at the population level. However, their usefulness is severely limited. In this paper, we suggest several improvements to substance...

Identifying the effects of political endorsements has historically been difficult. Before the 2008 Democratic presidential primary, Barack Obama was endorsed by talk show host Oprah Winfrey. In this article, we assess the impact of this endorsement using, as measures of Winfrey's influence,...

Researchers and retailers have documented that consumption declines before the receipt of income, and then rises afterwards. In this paper, we identify a related phenomenon, where mortality rises immediately after income receipt. We find that mortality increases following the arrival of monthly...

Few Social Security Disability Insurance (DI) beneficiaries return to the labor force, making it hard to assess their likely employment in the absence of benefits. Using administrative data, I examine the employment of individuals who lost DI eligibility after the 1996 removal of drug and...