We utilize the phased rollout of COVID-19 vaccines by age as a natural experiment for testing risk compensation. People may resume face-to-face social activities after vaccination because they perceive lower risk of infection. The national vaccination schedule in South Korea enables us to apply...

The introduction of risk-reducing technology can lead to unintended consequences, especially when risk compensation can be one of potential operating mechanism to offset the positive impact. For male circumcision, its preventive effect against HIV infection might diminish if circumcised men...

This paper studies the causal impacts of vaccine eligibility on social distancing behaviors (risk compensation). We apply a regression discontinuity design around the birth date cutoff of vaccine eligibility using large, high-frequency data from credit card and airline companies as well as...

This paper studies the long-term effect of hedge fund activism on the productivity of target firms using plant-level information from the U.S. Census Bureau. A typical target firm improves its production efficiency within two years after activism, and this improvement is concentrated in...

This paper studies the long-term effect of hedge fund activism on the productivity of target firms using plant-level information from the U.S. Census Bureau. A typical target firm improves its production efficiency in the three years after an activist intervention, and the improvements are most...

This paper studies the long-term effect of hedge fund activism on the productivity of target firms using plant-level information from the U.S. Census Bureau. A typical target firm improves its production efficiency in the three years after an activist intervention, and the improvements are most...