PEI Health Research Institute and School of Nursing, University Prince Edward Island, 550 University Avenue, Charlottetown, Prince Edward Island C1A4P3 Canada.
Psychol Health. 2010 Oct;25(8):925-41. doi: 10.1080/08870440902866894.
This paper elicited context specific underlying beliefs for physical activity, fruit and vegetable consumption and smoke-free behaviour from the Theory of Planned Behaviour (TPB), and then determined whether the TPB explained significant variation in intentions and behaviour over a 1 month period in a sample of grade 7-9 (age 12-16 years) adolescents. Eighteen individual interviews and one focus group were used to elicit student beliefs. Analyses of this data produced behavioural, normative and control beliefs which were put into a TPB questionnaire completed by 183 students at time 1 and time 2. The Path analyses from the main study showed that the attitude/intention relationship was moderately large for fruit and vegetable consumption and small to moderate for being smoke free. Perceived behavioural control had a large effect on being smoke free and a moderately large effect for fruit and vegetable consumption and physical activity. Intention had a large direct effect on all three behaviours. Common (e.g. feel better, more energy) and behaviour-specific (e.g., prevent yellow fingers, control my weight) beliefs emerged across the three health behaviours. These novel findings, to the adolescent population, support the importance of specific attention being given to each of the behaviours in future multi-behavioural interventions.
本文从计划行为理论（TPB）中引出了与身体活动、水果和蔬菜消费以及无烟行为相关的具体潜在信念，然后确定在 7-9 年级（12-16 岁）青少年样本中，TPB 是否能在 1 个月的时间内解释意图和行为的显著变化。通过 18 次个人访谈和 1 次焦点小组来引出学生的信念。对这些数据的分析产生了行为、规范和控制信念，这些信念被纳入了一份 TPB 问卷，该问卷由 183 名学生在第 1 次和第 2 次时间点完成。主要研究的路径分析表明，对于水果和蔬菜消费，态度/意图关系中等大小，对于无烟行为，态度/意图关系较小到中等大小。感知行为控制对无烟行为有较大影响，对水果和蔬菜消费以及身体活动有中等大小影响。意图对所有三种行为都有直接的较大影响。在三种健康行为中都出现了共同的（例如感觉更好、更有活力）和行为特定的（例如，预防黄手指、控制体重）信念。这些针对青少年群体的新发现支持了在未来的多行为干预中，需要特别关注每种行为的重要性。
