Since 2018, the Japanese Ministry of the Environment (MoE) has worked on the “Recycling Demonstration Project for the Soil Generated from Decontamination Activities” (the Project), which aims to offer empirical evidence for the final disposal of radiation‐contaminated substances. To offer practical suggestions for the Project, this study aimed to explore determinants of its support. More specifically, building on previous studies on trust, this study proposed a hypothetical model in which support for the Project was determined by trust in the MoE, which in turn was determined by salient value similarity, ability, and motivation. Additionally, it was hypothesised that the relationships between trust and its different determinants differed: Salient value similarity showed a stronger relationship with trust in those who lived near the place where the Project is taking place whereas ability and motivation showed stronger relationships with trust in those who did not. Questionnaire‐based research was conducted in both Iitate village (n = 106), Fukushima, where the Project had been taking place, and Tokyo (n = 163), located approximately 220 km from Fukushima. Multilevel structural equation modelling supported the hypothesis. These results suggest that emphasising the similarity of values between the MoE and the public would help obtain the public’s support for the Project.

中文翻译：

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日本福岛灾后“去污活动产生的土壤回收示范项目”支持的决定因素

自2018年以来，日本环境省（MoE）开展了“净化活动产生的土壤回收示范项目”（该项目），旨在为最终处理受辐射污染的物质提供经验证据。为了为该项目提供实用的建议，本研究旨在探讨其支持的决定因素。更具体地说，在先前关于信任的研究的基础上，本研究提出了一种假设模型，其中对项目的支持取决于对教育部的信任，而对教育部的信任则取决于显着的价值相似性，能力和动机。此外，假设信任与其不同决定因素之间的关系不同：显着的价值相似性表明，与生活在项目发生地附近的人之间的信任关系更强，而能力和动机对那些没有项目的地方的信任关系更强。基于问卷调查的研究是在两个Iitate村（n  = 106），项目进行地福岛和 距福岛约220公里的东京（n = 163）。多级结构方程建模支持该假设。这些结果表明，强调教育部和公众之间价值的相似性将有助于获得公众对项目的支持。