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:
0
Legend: Projects status
- Pre-registered project
- Completed project
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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
Effective position of call-to-action: Is the response rate higher if the call-to-action appears the…
How can response rates to questionnaires be increased? In the first quarter of 2023, some of the participants in a CBS survey received a letter in which the call-to-action appeared as far as possible at the top of the letter. The other participants received standard letters. The analyses showed that the standard letters produced a significantly higher response rate than the letters in which the call-to-action was placed at the top.
Why this experiment was conducted: high response rate is…
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…
BI Project
Correcting Misperceptions About Trends and Norms to Address Weak Collective Action – Experimental…
Finding ways to encourage collective action in contexts where only a minority adopts the desired behaviour is central to solving many of today's global environmental problems. We study how correcting people's beliefs about social norms and behavioural trends encourages collective action in a setting where the desired behaviour is not yet prevalent. In a field experiment, we test whether low sign-up rates for a municipal recycling program in urban Peru can be increased by providing information…
This project was led with the French National Forestry Office (ONF), which is an institution responsible for the management of public forests, under the supervision of the Ministry of Agriculture and Food and the Ministry of Ecological Transition. Our common project has studied how to apply behavioral science to enhance user safety in forests. It resulted in the generation of 17 Nudges. Experimentation is expected to start spring 2022.
BI Project
Can interventions in supermarkets reduce household food waste? A randomised controlled trial of…
The study was conducted in collaboration with eight supermarkets from two of the largest Swedish supermarket chains. The stores provided the natural environment in which to conduct an experiment using real shoppers and real purchases, without shoppers being aware of the study. Four different interventions (different price displays) were designed, based on insights from behavioural science. These signs were tested in a randomised controlled study for two common and perishable vegetables –…
BI Project
Give Your Car (and Wallet) a Break: Enabling more Sustainable Commutes in Pristina, Kosovo
Air pollution is a serious health and environmental problem in many cities, including Pristina, Kosovo, where poor air quality is a frequent issue. Private cars and taxis are a major mode of transportation in Pristina, contributing significantly to both pollution and congestion, which is most problematic at peak traffic hours when individuals commute to and from work. To tackle this issue, ideas42 partnered with the UNDP Kosovo to design a behavioral intervention with the unifying slogan, "Give…
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…
BI Project
Implementation of a chatbot based on behavioral strategies to promote the continuity of vaccination…
Despite the overwhelming medical evidence on the protection offered by the second, third and fourth doses of the Covid-19 vaccine, the acceptance of these doses remains low despite the existing supply. The problem is likely because there are currently no reminders in the province of Chaco, Argentina. This makes it difficult for residents to know if they are eligible for the next dose of the COVID-19 vaccine and where to access it.
Booster vaccination is associated with a lower risk of mortality…
Hospital-care-associated infections (HCAIs) represent the most frequent adverse event during care delivery, affecting hundreds of millions of patients around the world. Implementing and ensuring conformity to standard precautions, particularly best hand hygiene practices, is regarded as one of the most important and cheapest strategies for preventing HCAIs. The behavioural sciences have documented the potential of adjusting seemingly irrelevant contextual features in order to ‘nudge’ people…