世界银行：洪水快速行动：孟加拉国和尼泊尔基于预测的现金转移的随机对照试验证据（英文版）

As increasingly frequent extreme weather events disrupt lives, institutions are turning to early-warning systems and advance preparation to accelerate aid delivery. A randomized controlled trial in Bangladesh and Nepal tested whether providing cash within days of a flood leads to greater benefits than delivering the same assistance months later—or if it simply shifts the timing of benefits without improving overall welfare. The results suggest that timely cash assistance leads to overall gain