Opinion Change Data from Fukushima Soil Disposal Deliberation Experiment

128 Japanese university students participated in a group decision experiment on the final disposal of soil removed after the Fukushima nuclear accident. The study, authored by Yume Souma and uploaded in 2026, manipulated competitive and cooperative discussion contexts to measure opinion change and decision evaluation. Data is stored in a small 5.5 KB Excel file.

Use Cases

• Analyze the relationship between pre-discussion opinion and post-discussion decision evaluation scores under competitive conditions.
• Compare mean decision evaluation ratings between the cooperative and competitive context conditions.
• Model group-level decision outcomes (approve/disapprove) based on the composition of individual pre-discussion opinions.
• Examine the distribution of opinion change measurements across the 32 experimental groups.

Strengths

• Data originates from a controlled experiment with 128 participants across 32 groups.
• Explicit manipulation of two independent variables: competitive and cooperative controversy contexts.
• Dataset is shared under a permissive CC-BY-4.0 license for reuse.

Limitations

• Very small dataset at 5.5 KB, indicating limited records and features.
• Sample consists solely of Japanese university students, limiting generalizability to broader populations.
• Temporal coverage is limited to a single experiment with no longitudinal follow-up.

Provenance

Source

Yume Souma via figshare.

Collection Method

Controlled group decision experiment with participants assigned to competitive or cooperative discussion conditions.

Time Range

Experiment conducted at an unspecified date; dataset published in 2026.

Freshness

null

Geography

Japan, specifically concerning the disposal of soil removed from Fukushima Prefecture.