Behavioural Insights Projects

Five large cities in Noord-Brabant and the provincial authorities investigated how to improve cycling safety through behavioural interventions. They placed signs and markings along cycle routes in 's-Hertogenbosch, Breda, Eindhoven, Helmond and Tilburg. Half of the interventions had an effect; the number of dangerous situations decreased. Why this experiment was conducted: redesigning road layouts is not always possible Six locations in towns and cities in Noord-Brabant were identified as…

Institution: Noord-Brabant

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…

Institution: Netherlands Ministry of Justice and Security

Are people more likely to file their tax returns correctly if they receive a thank-you in advance or afterwards? Analyses show that thank-you messages have no effect on compliance behaviour. Why this experiment was conducted: positive alternative sought To encourage citizens' tax compliance (i.e., paying their taxes on time and correctly), it is occasional practice to emphasise the risk of checks and fines in case of non-compliance. One drawback of this deterrent method is that it can damage…

Institution: Dutch Tax and Customs Administration

'Returning to employment? Don't forget about your benefits!' When individuals receiving benefits return to employment having been registered as unemployed, it is important that they report the change in their income to the Benefits Unit on time, to avoid repayment demands. Why do individuals not comply with this notification requirement? And what interventions could improve compliance? A revised letter from the UWV Employee Insurance Agency and an additional page on the Benefits Unit website…

Institution: Netherlands Employee Insurance Agency (UWV)

Rijkswaterstaat conducted a behavioural campaign aimed at urging drivers on the N36 provincial road in Overijssel to keep a safe distance, to be calm and relaxed while driving and to pay attention to the road. The campaign achieved a reduction in distractions, less irritation and an overall improved driving experience. Why this experiment was conducted: many serious accidents on N36 The spotlight has been on the N36 between Hardenberg/Ommen and Almelo/ Wierden for some time due to the frequent,…

Institution: Rijkswaterstaat (Netherlands Directorate-General for Public Works and Water Management)

A circular business model promotes reuse of products and materials. A case in point is a model where consumers return their jeans to the manufacturer after use. Which circular business model characteristics are consumers willing to accept right now, and what do they refuse? Acceptance of these models seems to increase if companies offer effective or appealing option combinations, such as monthly payment schedules and discounted returns. Why this experiment was conducted: to promote the circular…

Institution: Rijkswaterstaat (Netherlands Directorate-General for Public Works and Water Management)

Why this experiment was conducted: scepticism about second-hand clothes The clothing industry is a major polluter, and the second-hand market is an important alternative to new clothes. While more and more Dutch consumers are turning to pre-owned clothing, a large group remains sceptical. According to a target group study conducted in 2020, they wonder whether they will be able to find a suitable second-hand item, and whether it is hygienic. The best way to overcome this scepticism is to create…

Institution: Dutch Ministry of Infrastructure and Water Management

Saving while being overdrawn costs consumers money. The interest they have to pay is far more than the interest they receive. An experiment tested two interventions aimed at encouraging consumers to use their savings to clear any overdraft, by pre-entering a repayment amount and giving explicit information about costs. These interventions lead to better choices amongst many, although not yet all, consumers. Why this experiment was conducted: saving while being overdrawn costs Dutch citizens…

Institution: Dutch Authority for the Financial Markets (AFM)

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…

Institution: Statistics Netherlands (CBS)

In early 2022, various kinds of text messages were sent to over 100,000 residents of Brabant-Zuidoost who had not yet received a booster jab from the GGD. The results show that the most effective variant − in the 6 days after receiving the text message − led to a 3.2% increase in the number of vaccinations administered. This was the text message saying 'Jouw boosterprik ligt voor je klaar' (You can now book your booster vaccination) plus a randomly allocated date, time and location. Why…

Institution: Netherlands Public Health Service