Encouraging resiliency through autoenrollment in supplemental flood insurance coverage
利用一家私人保险公司的实地数据，研究自动注册补充洪水保险（FloodReady）如何将投保率从12%提升至32%，表明行为干预能帮助房主为减少未来洪水损失提供资金支持。
Abstract Flooding is the most common and costly natural disaster, with losses escalating due to climate change. For millions of US homes exposed to flood risk, property‐level investments in flood resilience offer an attractive strategy to manage losses. But financing such investments remains a challenge. One option is to harness insurance. We use field data of residential flood insurance purchases from a private insurer that offered a supplemental policy ( FloodReady ) to cover the costs of rebuilding with flood‐resilient materials. We exploit a change in the default purchase option to estimate how default enrollment in FloodReady influences take‐up. We estimate that autoenrollment increases take‐up from 12% to 32%. This dramatic increase suggests that behavioral interventions can be used to improve the financial capacity of homeowners to reduce future flood losses. That said, the fact that most policyholders still actively opt‐out even under autoenrollments indicates the limits of default effects in this context. We discuss potential moderators and implications for default effects across settings.