Effects of Knowledge on Attitude Formation and Change Toward Genetically Modified Foods
Effects of Knowledge on Attitude Formation and Change Toward Genetically Modified Foods
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DOI：
10.1111/risa.12319
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发表时间：
2015-05
期刊：
影响因子：
3.8
通讯作者：
Xiaoqin Zhu;Xiaofei Xie
中科院分区：
文献类型：
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作者：
Xiaoqin Zhu;Xiaofei Xie
本研究分三波研究了风险和益处知识对转基因 (GM) 食品态度形成的影响，以及知识水平对接收信息引起的态度变化的调节作用。第一波（N = 561）中的数据表明，收益和风险知识要么直接有助于态度形成，要么通过收益和风险认知的中介作用间接影响态度。总体而言，利益和风险知识分别对消费者态度产生积极和消极的影响。在第二波中，第一波的 486 名参与者获得了有关转基因食品的信息，并对他们的态度进行了评估。三周后，其中 433 名参与者再次报告了他们的态度。结果表明，与利益和混合信息相比，风险信息对态度改变的影响更大、更持久，从而导致转基因食品的接受度较低。此外，风险信息对知识水平较高的参与者影响更大。知识对态度改变的调节作用可能来自这些参与者对信息更好的理解和更大的信任。这些发现强调了知识在对转基因食品的态度形成和态度改变中的重要作用，以及在态度改变研究中考虑态度形成的决定因素的必要性。
In three waves, this study investigates the impact of risk and benefit knowledge on attitude formation toward genetically modified (GM) foods as well as the moderating effect of knowledge level on attitude change caused by receiving information. The data in Wave 1 (N = 561) demonstrate that both benefit and risk knowledge either directly contribute to attitude formation or indirectly affect attitudes through the mediating roles of benefit and risk perceptions. Overall, benefit and risk knowledge affect consumer attitudes positively and negatively, respectively. In Wave 2, 486 participants from Wave 1 were provided with information about GM foods, and their attitudes were assessed. Three weeks later, 433 of these participants again reported their attitudes. The results indicate that compared with the benefit and mixed information, risk information has a greater and longer lasting impact on attitude change, which results in lower acceptance of GM foods. Furthermore, risk information more strongly influences participants with a higher knowledge level. The moderating effect of knowledge on attitude change may result from these participants’ better understanding of and greater trust in the information. These findings highlight the important role of knowledge in attitude formation and attitude change toward GM foods as well as the necessity of considering the determinants of attitude formation in attitude change studies.