Predicting adoption of nudges in U.S. cities (Public)
ProjectBottlenecks in policy experiments Study IDsspp-2022-0009-v1 Study Title
Predicting adoption of nudges in U.S. cities AuthorsStefano DellaVigna, Woojin Kim, Elizabeth Linos Completion Time10 Minutes Close DateMarch 31, 2022 DisciplineEconomics, Psychology FieldBehavioral Economics CountryUnited States Abstract In DellaVigna and Linos (2021, ECTA), we obtained a comprehensive sample of all the Randomized Controlled Trials (RCTs) run by two large nudge units working with U.S. federal departments and cities from 2015-19. We found that the average nudge led to a statistically significant improvement of 1.4 percentage points (s.e.=0.3) in absolute take-up of the targeted outcome, or an 8.0% relative increase.
This prior work did not keep track of how cities used the evidence from the RCTs after running the trials. How many of the nudges tested in the trials became adopted into government practice by these cities? And what predicts adoption?
To answer these questions, we contacted all the U.S. cities that collaborated with the Behavioral Insights Team (BIT), which is one of the nudge units from the paper. This survey collects forecasts about the adoption of nudges by U.S. cities after conducting RCTs with the Behavioral Insights Team.
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