Consumption and Healthy Lifestyles Group, Wageningen University and Research, Wageningen, The Netherlands.
Biometris, Wageningen University and Research, Wageningen, The Netherlands.
Appl Psychol Health Well Being. 2023 Nov;15(4):1714-1732. doi: 10.1111/aphw.12464. Epub 2023 Jun 19.
The current study explored (1) the immediate and prolonged effects of self-nudges promoting fruit intake in the home environment, (2) whether the effect of self-nudges on fruit intake persists after self-nudges are no longer used (i.e. a temporal spillover effect) and (3) whether self-nudges can install healthy eating habits that, in turn, explain the temporal spillover effect. Participants (N = 331) were randomly assigned to either a control or self-nudge condition in which they had to choose a self-nudge promoting fruit consumption for 8 weeks. Thereafter, participants were asked to remove the self-nudge for 1 week to assess a possible temporal spillover effect. Results showed a positive effect of the self-nudges on fruit consumption right after implementation that continued during the 8 weeks in which the self-nudge was implemented, which was accompanied by an increase in fruit intake habit strength. However, a mixed picture emerged regarding the temporal spillover effect and no support was found for a mediation effect of habit strength. Although this study is only a first exploration of self-nudging to increase healthy food consumption, results indicate that self-nudging may be a promising extension of traditional nudging that can influence behaviour beyond out-of-home settings.
本研究探讨了（1）在家庭环境中自我提示促进水果摄入的即时和长期效果，（2）自我提示对水果摄入的影响是否会在不再使用自我提示后持续（即时间溢出效应），以及（3）自我提示是否可以养成健康的饮食习惯，从而解释时间溢出效应。参与者（N=331）被随机分配到对照组或自我提示组，他们必须在 8 周内选择一种自我提示来促进水果消费。之后，要求参与者移除自我提示一周，以评估可能的时间溢出效应。结果显示，自我提示对水果消费有积极影响，这种影响在实施后的 8 周内持续存在，同时水果摄入量习惯强度也有所增加。然而，时间溢出效应的结果喜忧参半，习惯强度的中介效应也没有得到支持。尽管这项研究只是对自我提示以增加健康食品消费的初步探索，但结果表明，自我提示可能是对传统提示的一种有前途的扩展，可以影响家庭以外环境之外的行为。
