A randomized trial of computer-based communications using imagery and text information to alter representations of heart disease risk and motivate protective behaviour
A randomized trial of computer-based communications using imagery and text information to alter representations of heart disease risk and motivate protective behaviour
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DOI：
10.1348/135910710x511709
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发表时间：
2011-02-01
影响因子：
7.9
通讯作者：
Stevens, Carey
中科院分区：
文献类型：
--
作者：
Lee, Tarryn J.;Cameron, Linda D.;Stevens, Carey
Objective.基于网络的动画技术的进步为发展在整个社区传播的图形健康通信提供了新的机会。我们开发了图像和文本内容的简短，基于计算机的程序，心脏病的风险，图像和文本内容的常识模型（CSM）的自我调节。图像描绘了一个三维的，跳动的心脏量身定制的用户特定的信息。采用2 × 2 × 4析因设计，在预防导向的项目中处理关于心脏病风险的具体图像（图像与无图像）和概念信息（文本与无文本），并评估干预后2天、2周和4周的表征和行为动机变化。久坐不动的年轻人（N = 80）随机查看四个程序之一：图像加文字，图像，文字，或控制。参与者在基线、干预后2天（行为除外）、2周（仅意图和行为）和4周后完成了风险陈述、担忧、身体活动和健康饮食意图和行为的测量。意象内容增加了表征性信念和心理意象有关的心脏病，担心，并在干预后的意图。1个月后，连贯性（对心脏病的理解）和担忧感持续增加。2周后，图像内容也增加了健康饮食的努力。文本内容增加了对因果因素的信念，阻塞动脉的心理图像，以及干预后的担忧，并在2周后增加了体力活动，在1个月后增加了连贯性。以社区服务管理为基础的方案引起了风险陈述和行为动机的短期变化。基于CSM的文本和图像的组合似乎是最有效的灌输风险陈述，激励保护行为。
Objective. Advances in web-based animation technologies provide new opportunities to develop graphic health communications for dissemination throughout communities. We developed imagery and text contents of brief, computer-based programmes about heart disease risk, with both imagery and text contents guided by the commonsense model (CSM) of self-regulation. The imagery depicts a three-dimensional, beating heart tailored to user-specific information.Design. A 2 x 2 x 4 factorial design was used to manipulate concrete imagery (imagery vs. no imagery) and conceptual information (text vs. no text) about heart disease risk in prevention-oriented programmes and assess changes in representations and behavioural motivations from baseline to 2 days, 2 weeks, and 4 weeks post-intervention.Methods. Sedentary young adults (N = 80) were randomized to view one of four programmes: imagery plus text, imagery only, text only, or control. Participants completed measures of risk representations, worry, and physical activity and healthy diet intentions and behaviours at baseline, 2 days post-intervention (except behaviours), and 2 weeks (intentions and behaviours only) and 4 weeks later.Results. The imagery contents increased representational beliefs and mental imagery relating to heart disease, worry, and intentions at post-intervention. Increases in sense of coherence (understanding of heart disease) and worry were sustained after I month. The imagery contents also increased healthy diet efforts after 2 weeks. The text contents increased beliefs about causal factors, mental images of clogged arteries, and worry at post-intervention, and increased physical activity 2 weeks later and sense of coherence I month later.Conclusion. The CSM-based programmes induced short-term changes in risk representations and behaviour motivation. The combination of CSM-based text and imagery appears to be most effective in instilling risk representations that motivate protective behaviour.