Carfora V, Caso D, Conner M
Department of Humanities, University of Naples ''Federico II'', Via Porta di Massa, 1, 80133 Naples, Italy.
Department of Humanities, University of Naples ''Federico II'', Via Porta di Massa, 1, 80133 Naples, Italy.
Appetite. 2016 Nov 1;106:23-9. doi: 10.1016/j.appet.2015.12.020. Epub 2015 Dec 23.
This research investigated whether the Theory of Planned Behavior (TPB) with the addition of self-identity could predict fruit and vegetable intake when controlling for past behavior. Previous research had demonstrated the efficacy of TPB to predict intention and behavior in relation to food choice and the additional power of self-identity, but had failed assess the effects of self-identity while controlling for past behavior. At baseline (N = 210) TPB components and past behavior in relation to fruit and vegetable consumption plus self-identity as a healthy eater were measured by questionnaire in a sample of university students. At time 1, 4 weeks later, self-reported fruit and vegetable consumption was measured. Structural Equation Modelling (SEM) indicated attitude, PBC and self-identity to be significant predictors of intention (subjective norm and past behavior were not significant). Intention, self-identity and past behavior were direct predictors of behavior. The current findings support the independent effect of self-identity as a healthy eater on both intentions and future behaviour when controlling for TPB variables and also past behavior. The discussion considers the importance of self-identity in changing intentions and behavior for behaviors such as fruit and vegetable consumption.
本研究调查了加入自我认同的计划行为理论（TPB）在控制过去行为的情况下是否能够预测水果和蔬菜的摄入量。先前的研究已经证明了TPB在预测与食物选择相关的意图和行为方面的有效性以及自我认同的额外作用，但未能在控制过去行为的同时评估自我认同的影响。在基线时（N = 210），通过问卷调查对一组大学生样本测量了与水果和蔬菜消费相关的TPB成分、过去行为以及作为健康饮食者的自我认同。在4周后的时间1，测量了自我报告的水果和蔬菜消费量。结构方程模型（SEM）表明，态度、感知行为控制和自我认同是意图的显著预测因素（主观规范和过去行为不显著）。意图、自我认同和过去行为是行为的直接预测因素。当前的研究结果支持了在控制TPB变量以及过去行为时，作为健康饮食者的自我认同对意图和未来行为的独立影响。讨论部分考虑了自我认同在改变水果和蔬菜消费等行为的意图和行为方面的重要性。
