Excess intake of 'free sugars' is a key predictor of chronic disease, obesity, and dental ill health. Given the importance of determining modifiable predictors of free sugar-related dietary behaviors, we applied the integrated behavior change model to predict free sugar limiting behaviors. The model includes constructs representing 'reasoned' or deliberative processes that lead to action (e.g., social cognition constructs, intentions), and constructs representing 'non-conscious' or implicit processes (e.g., implicit attitudes, behavioral automaticity) as predictors of behavior. Undergraduate students (N = 205) completed measures of autonomous and controlled motivation, the theory of planned behavior (TPB) measures of explicit attitude, subjective norms, perceived behavioral control (PBC), and intentions, past behavior, implicit attitude, and behavioral automaticity at an initial point in time, and free sugar limiting behavior and behavioral automaticity two weeks later. A Bayesian structural equation model indicated that explicit attitude, subjective norms, and PBC predicted behavior via intention. Autonomous motivation predicted behavior indirectly through all TPB variables, while controlled motivation predicted behavior only via subjective norms. Implicit attitudes and behavioral automaticity predicted behavior directly and independently. Past behavior predicted behavior directly and indirectly through behavioral automaticity and intentions, but not implicit attitudes. Current findings suggest pervasive effects of constructs representing both reasoned and non-conscious processes and signpost potential targets for behavioral interventions aimed at minimizing free sugar consumption.

中文翻译：

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使用健康行为的综合模型预测限制“游离糖”消费

过量摄入“游离糖”是慢性病、肥胖和牙齿健康不良的关键预测因素。鉴于确定游离糖相关饮食行为的可修改预测因子的重要性，我们应用综合行为改变模型来预测游离糖限制行为。该模型包括表示导致行动的“理性”或审议过程（例如，社会认知结构、意图）的结构，以及表示“无意识”或内隐过程（例如，内隐态度、行为自动性）作为行为预测因素的结构。本科生 (N = 205) 完成了自主和受控动机的测量、外显态度、主观规范、感知行为控制 (PBC) 和意图、过去行为的计划行为理论 (TPB) 测量、初始时间点的内隐态度和行为自发性，以及两周后的游离糖限制行为和行为自发性。贝叶斯结构方程模型表明外显态度、主观规范和 PBC 通过意图预测行为。自主动机通过所有 TPB 变量间接预测行为，而受控动机仅通过主观规范预测行为。内隐态度和行为自动化直接和独立地预测行为。过去的行为通过行为自动性和意图直接或间接预测行为，但不是内隐态度。