Is There Persistence in the Impact of Emergency Food Aid? Evidence on Consumption, Food Security, and Assets in Rural Ethiopia
研究2002年旱灾后埃塞俄比亚农村紧急粮食援助对后续福利的影响，发现以工代赈提高了总消费和食品消费增长，而免费食品虽提高食品消费增长却意外降低了粮食安全，且两类援助对不同收入群体效果不同。
We identify the impact of emergency food aid programs after the 2002 drought in rural Ethiopia on future welfare. Based on a difference‐in‐differences matching estimator, participation in food‐for‐work increases growth in total consumption and food consumption eighteen months after the drought. Separately, receiving free food raises growth in food consumption, but, surprisingly, negatively impacts food security. Food‐for‐work benefited households in the middle and upper tail of the consumption distribution, while the better‐targeted free food program benefited the poorest. Evidence suggests these impacts demonstrate accumulated and persistent effects of food aid received in the first twelve months after the drought.