The Group Discussion Experiment on the Treatment of Removed Low Concentration Soil outside Fukushima Prefecture: Contemplation of Common Goods and the Development of the Index Visualizing the Discourse Qualities

Abstract

An enormous amount of removed soils were produced by the decontaminated works derived from the Fukushima nuclear power plant accident. Public understanding and dialogues are required to realize the final disposal of the removed soils. This study contemplated the plural principles of common goods surrounding the removed soils. A group discussion experiment was conducted, setting three arguing points. Before the experiment, the Discourse Quality Index (DQI) was developed to visualize the discussion qualities by plural evaluators, which was confirmed the validity showing sufficient matching rates between the evaluators. Results of the experiment by the analysis of DQI score showed that statements from the points of Utilitarianism were observed the most, while the statements from maximin were fewer. However, many decisions of the groups gave priority to the inequity alleviation and the maximin principles.