不同形状的食物指南的有效性和效率。
Effectiveness and efficiency of different shapes of food guides.
机构信息
Swiss Federal Institute of Technology Zurich, Institute for Environmental Decisions, Consumer Behavior, Zurich, Switzerland.
出版信息
J Nutr Educ Behav. 2012 Sep-Oct;44(5):442-7. doi: 10.1016/j.jneb.2011.09.005. Epub 2012 May 9.
OBJECTIVE
To compare the influence of a food guide's shape on its effectiveness and efficiency to convey nutritional information.
METHODS
A between-subjects experiment was conducted by manipulating the graph's shape (circle, pyramid, or rainbow). Nutrition tasks were used to assess the effectiveness and eye-movement data (number/duration of fixations) to examine the efficiency of the formats. The data were quantitatively analyzed (chi-square, ANOVA).
RESULTS
There were no overall differences between the formats regarding effectiveness and efficiency. However, there were differences between the formats in effectiveness regarding 3 of the 5 nutrition tasks (χ(2)s ≥ 7.044, Ps < .05). Furthermore, viewers' attention was drawn to different parts of the graph, depending on the format.
CONCLUSIONS AND IMPLICATIONS
The results suggest that choosing different formats for practical nutrition communication does not play a major role in effectiveness or efficiency of this communication. However, different parts of the graph are more salient in various food guide formats.
目的
比较食物指南形状对传达营养信息的效果和效率的影响。
方法
通过操纵图形的形状（圆形、金字塔形或彩虹形）进行了一项被试间实验。使用营养任务评估格式的效果和眼动数据（注视次数/持续时间）来评估效率。对数据进行了定量分析（卡方检验，方差分析）。
结果
在效果和效率方面，五种格式之间没有总体差异。然而，在五个营养任务中的三个任务中，格式之间存在效果差异（χ(2) 值≥7.044，P 值<.05）。此外，根据格式的不同，观众的注意力会被吸引到图表的不同部分。
结论和启示
结果表明，在实际营养传播中选择不同的格式在这种传播的效果或效率方面没有起到主要作用。但是，在不同的食物指南格式中，图表的不同部分更加突出。
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