Bi Project Status: Completed

In an effort to boost COVID-19 vaccination rates, mobile vaccination units were rolled out in late 2021. This strategy proved successful: the number of vaccinations administered was between 1.1 and 14.5 times higher in neighbourhoods on the days they were visited by mobile units. The units were more effective in rural areas than in urban settings. In addition, they proved to be more effective than average in neighbourhoods with a higher proportion of SGP voters and still effective, although to a…

Could we expect a higher vaccine uptake if vaccination appointments are no longer necessary? A campaign in neighbourhoods where vaccination rates were lagging sought to test whether emphasising convenience led to an increase in the number of administered vaccinations, by offering walk-in vaccination without an appointment. This indeed proved to be the case. Furthermore, getting a COVID-19 vaccine on a walk-in basis has become popular, along with the platform PrikkenZonderAfspraak. Why this…

Institution: National Institute for Public Health and the Environment (RIVM)

Washing your hands regularly with soap and water is an effective and easy way of reducing the risk of people falling ill with COVID-19, influenzas or a cold, or contracting other viral illnesses. Stickers and posters were developed focusing on reframing, nudging and habit stacking. Displaying the posters in the office environment led to an increase in handwashing amongst employees. Soap consumption went up. Why this experiment was conducted: improved hygiene standards in the workplace is the…

Institution: Netherlands Ministry of Justice and Security; Netherlands Ministry of Health, Welfare and Sport; and RIVM

Due to the COVID-19 pandemic, guests were required to wear face masks on entering and while moving inside hospitality venues. To promote this behaviour, self-persuasion and salience techniques were used in this experiment - with notable success. Following the announced relaxation of face mask requirements, there was a decrease in face mask usage, although this was significantly less in hospitality venues that saw interventions than in venues that did not experience interventions. Why this…

The 'Fit op jouw manier' (Fit your way) campaign aims to encourage overweight individuals to get after. The campaign successfully reaches the target audience, motivating them with tips that they then practice. For example, more people now regularly take the stairs instead of the life or escalator. Why this experiment was conducted: combating overweight and obesity The Prevention Agreement aims to reduce the proportion of overweight adults from 50% in 2018 to 38% by 2040. A healthy lifestyle…

Institution: Netherlands Ministry of Health, Welfare and Sport

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

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)

The Municipality of Dordrecht organised a competition titled The Cleanest Neighbourhood in Dordrecht. The aim was to get residents to place less rubbish next to underground waste containers. As a result of the experiment, the amount of waste left next to bins decreased and a new social norm was established. Why this experiment was conducted: rubbish left next to waste containers Bin liners and other bags containing residual and larger waste left next to underground containers rank amongst the…

Institution: Netherlands Municipality of Dordrecht

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)

An online experiment investigated how behavioural techniques could be used to increase the likelihood of companies with 2 to 10 employees applying for assistance under the Subsidy Scheme Improving Sustainability of SMEs (SVM ). The results show that an updated version of the website helps to clarify the subsidy. This effect is not reflected in the likelihood of these micro-SMEs actually applying for the subsidy. Why this experiment was conducted: SVM scheme not being fully utilised It is…

Institution: Netherlands Enterprise Agency