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When Digital Nudges Nag: Evidence on Program Take-up from a WhatsApp Intervention
本文研究了一项随机对照试验，其中在哥伦比亚的无证委内瑞拉移民被分配接收通过WhatsApp发送的鼓励注册正规化项目的视频信息。干预适得其反。收到视频后，参与率降低了8个百分点，相对于对照组平均值下降了15%。负面效果通过两个渠道运作。在观看视频的个体中，接触到程序性内容会阻碍注册。在那些没有参与的个体中，未经请求的联系本身就降低了参与率。这两种效果都集中在参与决策边缘的个体中。这些发现挑战了设计良
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