In a pre-registered experiment, we tested whether expert endorsement increases the effectiveness of debunking messages about COVID-19 vaccines. We monitored a sample of 2,277 people in Italy through a longitudinal study along the salient phases of the vaccination campaign. Participants received a series of messages endorsed by either medical researchers (experimental group) or by generic others (control). In order to minimise demand effects, we collected participants’ responses always at ten…
Behavioural Insights Projects
Discover projects applying behavioural science to policy from around the world. Add your own projects, whether completed or still ongoing, to contribute knowledge on BI applications across different countries, policy areas, and topics of interest.
Number of BI projects:
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Legend: Projects status
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Challenge
Tax delinquencies are a major problem for most tax administrations in the world. In Colombia, the National Accountant Office estimated the total outstanding debt to the National Tax Agency at $2.5 billion, which represents about 20 percent of estimated total tax evasion in 2014. Finding ways to reduce tax delinquencies is critical for both fiscal and equity considerations. A previous study compared messages about due liabilities delivered through three channels (letter, email, or…
PROJECT SUMMARY
To increase uptake of flu vaccines and maintain a healthy workforce during the 2016-17 flu season, New York City’s Behavioral Design Team (NYC BDT) partnered with WorkWell NYC to design behaviorally informed emails to encourage New York City employees to visit a worksite flu clinic. One version of the redesigned email used the strategy of “enhanced active choice,” whereby employees were prompted to make a choice that had a clear right answer.
IMPACT
Behavioral emails more…
Climate change is undoubtedly a challenge with deep - and increasingly complex - behavioural roots. High profile efforts are already underway in Canada through federal levers, like the carbon tax, energy efficiency regulations, and investments in clean technology, that further the Government of Canada's goals for decarbonization, electrification, energy-efficiency, and nature-based solutions. An additional tool to contribute to these efforts is evidenced-based, data-driven behavioural science…
BI Project
Applying behavioural science to decrease air contamination from woodheating in Ile de France
More than 480 000 people in Ile de France use an inefficient woodheating device releasing high quantities of particulate matters in the environment but do not always link air pollution and woodheating.
This project aimed to inform the inhabitants about this link and encourage them to renew their ancient devices and adopt good practices around woodheating.
281 households were equiped with particulate matter sensors and the DITP compared the evolution of contamination between groups, divided in…
Repairability of laptop computers: the Behavioral Sciences team of the interministerial department for transformation is piloting a study on the display of an index intended to clarify consumer choice. The objective: to support the General Commission for Sustainable Development (CGDD) in the implementation of this new tool.
The study aims to identify barriers and trade-offs faced by consumers when deciding whether to engage in the circular economy. In particular, it explores decisions whether to buy a more or a less durable good, and whether to have a good repaired or to discard it and buy a replacement. It establishes the relative importance of economic, social and psychological factors that govern how consumers engage in the circular economy. Finally, it proposes policy tools to enable and encourage consumers to…
BI Project
Behavioral Sciences for the reconnection of secondary level students to the educational system
The project has the objective of accompanying, complementing, and strengthening the jurisdictional efforts of re-linking and permanence of students in the educational system through the national program "Volvé a la escuela" (Go Back to School) and jurisdictional initiatives, based on simple and cost-effective behavioral science interventions such as cellphone messaging. A mobile messaging strategy (text message and/or Whatsapp) will be designed to encourage students and their families to…
Overall, this research investigated how to enhance the effectiveness of multi-stakeholder collaboration in tackling climate change. By leveraging two socio-psychological theories – Self-Affirmation Theory (SAT) and Moral Foundations Theory (MFT),this study equipped facilitators with strategies to reduce identity threats, foster constructive dialogs, and ultimately contribute to the development of more effective solutions in the environmental domain.
BI Project
Nudging to reduce littering in waste disposal areas – A field experiment in Austria’s community…
Soiled waste disposal areas in municipal public housing buildings are not only a major nuisance for residents, but also cause high cleaning costs. The aim of the present study was to develop behavioral measures to promote cleanliness and to test them in a field experiment with about 400 waste disposal areas. The present paper compares two System-1 (large posters displaying watching eyes and a natural landscape) and two System-2 (financial information, information on normative behavior and…