リスクの受容を巡る保護価値と理解の錯覚に関する研究―高レベル放射性廃棄物処分場の立地問題に関するシナリオ実験―

抄録

People often regard their values as absolute and try to protect them from trade-offs with other values. These protected values (PVs) may make it difficult to build a regional consensus around risk acceptance. We hypothesized that people with PVs who refuse risk-taking for public policy have an illusion of understanding in that they know less about the policy than they think they do. Focusing on the issue of the construct of a disposal facility of high level radioactive waste, this study examined the effects of providing reflective opportunity regarding the impacts of the facility on the changes in PVs and self-assessments of their own understanding. It was shown that both the tendency to hold PVs and self-assessments of their own understanding decreased through the experimental work. The result indicated that strong attitudes of PVs tended to be moderate as they became to understand that they didn’t understand the policy.