Melbourne Centre for Behaviour Change, Melbourne School of Psychological Sciences, The University of Melbourne, Parkville, VIC, 3056, Australia.
The George Institute for Global Health, University of New South Wales, Sydney, Australia.
Sci Rep. 2024 Jul 23;14(1):16870. doi: 10.1038/s41598-024-67751-x.
An understanding of the extent to which target audiences consider different nutrition-related messages to be effective could assist campaign developers design more persuasive communications. Accordingly, this study sought to develop and assess the utility of the Perceived Effectiveness of Nutrition Messages Scale (PENMS). A longitudinal online survey was completed by Australian adults (n = 5,014 at Time 1 and 2,880 at Time 2). At T1, respondents saw one of two messages promoting healthy eating. They were then administered the PENMS, and asked how likely they were to engage in the behaviour specified in the message. Respondents completed the PENMS again at T2. An exploratory factor analysis was performed on PENMS scores and measures of reliability and validity obtained. Two factors were identified: 'effects perceptions' (Factor 1) and 'message perceptions' (Factor 2). Internal consistency of scores was 0.82 for Factor 1 and 0.70 for Factor 2. Test re-test reliability was 0.76 and 0.69 for Factors 1 and 2, respectively. Scores on both factors were moderately correlated with behavioural intentions. The favourable results for PENMS scores suggest the scale may be a useful tool for assessing the extent to which target audiences consider different nutrition-related messages to be effective.
了解目标受众认为哪些与营养相关的信息更有效，可以帮助活动开发者设计更有说服力的信息。因此，本研究旨在开发和评估营养信息感知有效性量表（PENMS）的效用。一项纵向在线调查由澳大利亚成年人（T1 时 5014 人，T2 时 2880 人）完成。在 T1 时，参与者看到了两个宣传健康饮食的信息中的一个。然后，他们被要求评估 PENMS，并回答他们有多可能按照信息中指定的行为去做。参与者在 T2 时再次完成 PENMS。对 PENMS 得分进行了探索性因素分析，并获得了可靠性和有效性的衡量标准。确定了两个因素：“效果感知”（因素 1）和“信息感知”（因素 2）。因素 1 的得分内部一致性为 0.82，因素 2 的得分内部一致性为 0.70。因素 1 和因素 2 的重测信度分别为 0.76 和 0.69。两个因素的得分与行为意向中度相关。PENMS 得分的良好结果表明，该量表可能是评估目标受众认为不同营养相关信息有效性的有用工具。
