Are Dutch Adults Equally Susceptible to Nudging and Pricing Strategies for Healthier Diets?
Practical Findings from the Supreme Nudge Supermarket Trial
Supermarket interventions aimed at promoting healthier dietary patterns were studied to see if their effectiveness differed based on psychological and grocery shopping characteristics.
Findings from the 12-month trial involving Dutch-speaking adults aged 30-80 years and regular shoppers in socially disadvantaged neighborhoods revealed that the interventions did not have an overall effect on diet quality.
Stratified analyses showed no significant effects on diet quality for certain subgroups, and small, statistically non-significant negative effects for others. These negative effects were suggested for individuals with lower baseline levels of meal planning, healthy shopping convenience, and healthy food attractiveness, as well as those with higher levels of price consciousness and weekly supermarket visits.
Overall, the study suggests that adults with varying psychological and grocery shopping characteristics appear to be equally (un)susceptible to nudging and pricing strategies for healthier diets. However, further verification of these findings is needed in real-world trials based on larger sample sizes and more comprehensive interventions.
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