| 来源类型 | Working Paper |
| 规范类型 | 报告 |
| DOI | 10.3386/w27594 |
| 来源ID | Working Paper 27594 |
| RCTs to Scale: Comprehensive Evidence from Two Nudge Units | |
| Stefano DellaVigna; Elizabeth Linos | |
| 发表日期 | 2020-07-27 |
| 出版年 | 2020 |
| 语种 | 英语 |
| 摘要 | Nudge interventions have quickly expanded from academic studies to larger implementation in so-called Nudge Units in governments. This provides an opportunity to compare interventions in research studies, versus at scale. We assemble a unique data set of 126 RCTs covering over 23 million individuals, including all trials run by two of the largest Nudge Units in the United States. We compare these trials to a sample of nudge trials published in academic journals from two recent meta-analyses. In papers published in academic journals, the average impact of a nudge is very large – an 8.7 percentage point take-up effect, a 33.5% increase over the average control. In the Nudge Unit trials, the average impact is still sizable and highly statistically significant, but smaller at 1.4 percentage points, an 8.1% increase. We consider five potential channels for this gap: statistical power, selective publication, academic involvement, differences in trial features and in nudge features. Publication bias in the academic journals, exacerbated by low statistical power, can account for the full difference in effect sizes. Academic involvement does not account for the difference. Different features of the nudges, such as in-person versus letter-based communication, likely reflecting institutional constraints, can partially explain the different effect sizes. We conjecture that larger sample sizes and institutional constraints, which play an important role in our setting, are relevant in other at-scale implementations. Finally, we compare these results to the predictions of academics and practitioners. Most forecasters overestimate the impact for the Nudge Unit interventions, though nudge practitioners are almost perfectly calibrated. |
| 主题 | Microeconomics ; Behavioral Economics ; Public Economics ; National Fiscal Issues ; Health, Education, and Welfare ; Poverty and Wellbeing |
| URL | https://www.nber.org/papers/w27594 |
| 来源智库 | National Bureau of Economic Research (United States) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/585265 |
| 推荐引用方式 GB/T 7714 | Stefano DellaVigna,Elizabeth Linos. RCTs to Scale: Comprehensive Evidence from Two Nudge Units. 2020. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| w27594.pdf（2298KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
