Signal · indexed from World Bank Documents & Reports
World Bank
This paper studies a randomized controlled trial in which undocumented Venezuelan migrants in Colombia were assigned to receive informational videos via WhatsApp encouraging registration in a regularization program. The intervention backfired. Receiving a video reduced take-up by 8 percentage points, a 15 percent decline relative to the control mean. The negative effect operated through two channels. Among individuals who watched, exposure to procedural content discouraged registration. Among those who did not engage, unsolicited contact itself reduced take-up. Both effects were concentrated among individuals at the margin of the decision to participate. These findings challenge the assumption that well-designed informational nudges are, at worst, neutral.
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| Field | How we know | State | Confidence |
|---|---|---|---|
| Publication date | Official API or feed | Data quality: Source-backed | 100 |
States describe GLODA's confidence in its own fields, never a judgement on the notice or its parties. Methodology