Daiss Fabian, Siebertz Markus, Jansen Petra
Faculty of Human Sciences, Institute for Sports Science, University of Regensburg, Regensburg, Germany.
Front Nutr. 2025 May 8;12:1469301. doi: 10.3389/fnut.2025.1469301. eCollection 2025.
The study's main goal was to investigate the effect of ego depletion on explicit and implicit attitudes and behavior toward sustainable food consumption in the context of dual-process models describing sustainable behavior.
171 student participants completed an explicit rating and an affective priming task, respectively, at pre- and post-intervention, namely a six-minute transcription task to induce ego depletion. They then conducted a decision-making task (sustainable vs. less-sustainable chocolate bar) to test sustainable behavior during ego depletion.
Contrary to our hypotheses, explicit attitudes toward sustainable nutrition remained stable across conditions, showing no significant decline in the depletion group. Unexpectedly, implicit attitudes toward sustainable vegetarian nutrition became more negative over time, irrespective of the experimental condition. In the decision-making task, participants' behavior was primarily predicted by their explicit attitudes post-intervention, rather than their implicit attitudes or ego depletion state.
These findings challenge the assumption that ego depletion weakens explicit attitudes toward sustainable behavior, particularly vegetarian nutrition. Instead, explicit attitudes appear to be stable and the predominant predictor of sustainable food choices.
在描述可持续行为的双加工模型背景下，本研究的主要目标是调查自我损耗对可持续食品消费的显性和隐性态度及行为的影响。
171名学生参与者在干预前后分别完成了一项显性评分任务和一项情感启动任务，即一项六分钟的抄写任务以诱导自我损耗。然后他们进行了一项决策任务（选择可持续的巧克力棒还是不太可持续的巧克力棒），以测试自我损耗期间的可持续行为。
与我们的假设相反，在不同条件下，对可持续营养的显性态度保持稳定，损耗组没有显著下降。出乎意料的是，随着时间的推移，对可持续素食营养的隐性态度变得更加消极，与实验条件无关。在决策任务中，参与者的行为主要由干预后的显性态度预测，而不是他们的隐性态度或自我损耗状态。
这些发现挑战了自我损耗会削弱对可持续行为，特别是素食营养的显性态度这一假设。相反，显性态度似乎是稳定的，并且是可持续食品选择的主要预测因素。
