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Communication About Micropollutants in Drinking Water: Effects of the Presentation and Psychological Processes

机译：关于饮用水中微量污染物的交流：陈述和心理过程的影响

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This study investigates how people change their risk perception, trust, and behavior as a consequence of being informed about the occurrence of micropollutants in drinking water. Micropollutants are substances present in extremely low concentrations that might be dangerous in higher concentrations. Data were gathered in the city of Zurich, Switzerland in 2013 using a questionnaire in which the information on micropollutants was presented differently to 12 experimental groups. Data of the key constructs were gathered before and after this information, so that causal effects could be quantified by regression analyses. Affective reactions to the information turned out to be the critical mediator of changes in risk perception (operationalized as the perceived change of quality due to pollution), which is an important determinant of changes in behavior and trust. Also, direct effects of affective reactions on behavior and trust were observed. Trust before appraising risks reduces negative affective reactions; however, it also reduces perceived quality (i.e., increases risk perception) and trust after risks are appraised. The different forms of information mainly influenced the participants' affective reactions, but they also influenced perceived quality. The presentation with the least negative effects was a comparison of the intake of the substance by water with intake by food. The experimental design with repeated measurement that considers trust as a determinant and consequence of risk perception uncovered positive and negative effects of trust before appraising risks on changes of risk perception and trust due to appraising risks.
机译：这项研究调查了人们如何了解饮用水中微量污染物的发生，从而改变他们的风险感知，信任和行为。微量污染物是极低浓度的物质，高浓度时可能有危险。 2013年，使用问卷调查表在瑞士苏黎世市收集了数据，其中关于微污染物的信息与12个实验组的呈现方式有所不同。在此信息之前和之后都收集了关键结构的数据，因此可以通过回归分析来量化因果关系。事实证明，对信息的情感反应是风险感知变化的关键中介（可操作为由于污染引起的感知质量变化），这是行为和信任度变化的重要决定因素。此外，观察到情感反应对行为和信任的直接影响。在评估风险之前信任可以减少负面的情感反应；但是，它也降低了感知质量（即提高了风险感知）和评估风险后的信任度。信息的不同形式主要影响参与者的情感反应，但也影响感知质量。负面影响最小的表述是水摄入的物质与食物摄入的比较。在进行重复测量的实验设计中，将信任视为决定因素和风险感知的结果，从而在评估风险之前评估了风险对感知感知和信任的变化所产生的信任的正面和负面影响。

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