Moran Angela, Mullan Barbara
School of Psychology, Curtin University, Perth, Australia.
Psychol Health. 2021 Mar;36(3):334-350. doi: 10.1080/08870446.2020.1774055. Epub 2020 Jun 3.
Sugar-sweetened beverage (SSB) consumption is a high-risk dietary behaviour and represents a pressing public health concern. The present research aimed to utilize temporal self-regulation theory to explore the intention-behaviour gap in SSB consumption in adults. A prospective correlational design (two data collection points) was used. A convenience sample of 387 Australian adults completed online questionnaires measuring intention, habit strength, environmental cues, past behaviour and self-control. One week later, 292 participants (76% female), aged 17 to 72 years ( = 24.72, = 7.98) completed a self-report measure of SSB intake over the previous week (attrition 23.8%). Hierarchical multiple regression analysis revealed partial support for temporal self-regulation theory, with the model predicting 32.9% of the variance in consumption, and a large effect size ( = 0.53). Intention accounted for 17.9% (Δ = .19, < .001) variance in behaviour. Habit and environmental cues together accounted for an additional 13.8% (Δ = .32, < .001). Self-control did not predict consumption, and no interaction effects were found on the intention-behaviour relationship. Reflective and automatic processes were both important predictors of consumption. Intention, habit, and environmental cues may be suitable intervention targets to reduce consumption.
饮用含糖饮料（SSB）是一种高风险的饮食行为，也是一个紧迫的公共卫生问题。本研究旨在运用时间自我调节理论，探讨成年人饮用SSB的意图-行为差距。采用了前瞻性相关设计（两个数据收集点）。选取387名澳大利亚成年人作为便利样本，他们完成了在线问卷，测量意图、习惯强度、环境线索、过去行为和自我控制能力。一周后，292名参与者（76%为女性），年龄在17至72岁之间（平均年龄=24.72岁，标准差=7.98岁）完成了一份关于前一周SSB摄入量的自我报告测量（损耗率为23.8%）。分层多元回归分析部分支持了时间自我调节理论，该模型预测了32.9%的消费方差，且效应量较大（=0.53）。意图解释了行为中17.9%（Δ=.19，p<.001）的方差。习惯和环境线索共同解释了另外13.8%（Δ=.32，p<.001）的方差。自我控制能力并不能预测消费情况，且在意图-行为关系上未发现交互作用。反思性和自动性过程都是消费的重要预测因素。意图、习惯和环境线索可能是减少消费的合适干预目标。
