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
- Pre-registered project
- Completed project
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The Ministry of Finance of the Republic of Latvia collaborated with the World Bank on a holistic review of the country's tax system, an input to the design of a new, improved tax strategy. The State Revenue Service (SRS), Latvia's tax authority, worked with the Mind, Behavior, and Development (eMBeD) Unit at the World Bank to pilot a field experiment to increase tax compliance. The experiment involved sending preemptive, behaviorally-informed email messages to taxpayers with a share of income…
Behaviorally informed messages have had demonstrated success in increasing tax compliance in multiple regional settings. In Indonesia, which has the largest economy in Southeast Asia, a trial from the Directorate General of Taxes (DGT) and World Bank teams looked at whether behaviorally informed messages and materials can impact tax compliance and payment rates among small and medium enterprises (SMEs). The results showed, to get delinquent firms to pay their taxes, information is not enough -…
The Ministry of Justice and Security developed a behavioural intervention aimed at inspiring individuals to adopt safe cyber practices: 'Valse email? Meld het via de meldknop' (Fake email? Report it using the report button). Thanks to this behavioural intervention, employees are ten times more likely to report suspicious emails internally. Moreover, click rates on links in suspicious emails have significantly decreased.
Why this experiment was conducted: One in five SMEs have been victims of…
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…
BI Project
Pre-contractual information and billing in the energy market – improved clarity and comparability
The study investigates minimum requirements and options for standardisation of energy offers and bills that ensure increased clarity and comparability, and puts forward better alternative “bill designs”. The study also examines the main factors discouraging energy consumers from switching, with a focus on the impact of exit fees in this decision. Finally, price comparison tools (PCTs) in the energy sector are examined and (independent) verification schemes for such tools are identified.
BI Project
New applicants for fiscal scheme to promote innovation Will website changes lead to more…
This experiment involved making the information on the WBSO website clearer and more personally relevant to entrepreneurs. The visibility of the call-to-action was also enhanced. The study showed that entrepreneurs were prompted to spend more time exploring the possibilities offered by the Research and Development (Promotion) Act (WBSO) and that they read the information more carefully.
Why this experiment was conducted: number of new applications below expectations
The Research and Development…
BI Project
Combining Incentives with Narratives: Online-Field Experiment with Tesco to Reduce Plastic Bag Use
The pervasive use of single-use plastic bags presents a growing environmental challenge globally. Despite legislative efforts, such as the mandatory 5p bag-charge introduced in England in October 2015, the problem persists. The issue took on renewed urgency in the wake of the Covid-19 pandemic, which has seen a regression in consumer habits towards increased use of single-use plastics, driven by health and safety concerns (Adyel, 2020).
While traditional economic theory suggests that incentives…
Previous research by the Program of Applied Research on Climate Action and the Environment (PARCA) team has found that Canadians generally display poor understanding of the relative impacts of different pro-climate actions and have gaps in their understanding of climate change. Following up on these findings, a randomized controlled survey-experiment was conducted in December 2023 to test the impact of several behaviourally-informed interventions on climate literacy outcomes. Results suggested…
In the study, the effectiveness of four reminder messages was evaluated through an online laboratory experiment involving 2,963 participants. The content of these messages was designed based on evidence from behavioural sciences, and their effect was contrasted with that of a simple, brief, and direct message (control message). The impact of the reminders was measured through four outcome variables: the action participants declared they would take after receiving the message, understanding and…
The Program of Applied Research on Climate Action in Canada (PARCA Canada) combines behavioural science (BeSci) insights and methods with robust policy analysis to promote climate action. One of the main areas of focus involves the launch of a longitudinal survey that will, over time, collect data on research questions of interest to the promotion of climate action in Canada (e.g. transportation, home energy use, waste management, engagement with nature, preparedness for extreme weather,…