Experimental Data on Group Deliberation for Fukushima Soil Disposal

A 2026 study by Yume Souma presents experimental data from 128 Japanese university students organized into 32 groups. The research examines how competitive versus cooperative controversy contexts influence opinion change and decision evaluation regarding the final disposal of soil removed after the Fukushima nuclear accident. The dataset is a 5.5 KB Excel file containing the experimental results.

Use Cases

• Analyze the relationship between experimental condition (competitive/cooperative) and decision evaluation scores.
• Model opinion change metrics based on pre- and post-discussion survey data.
• Investigate correlations between individual pre-discussion opinions, group decision outcomes, and subsequent outcome ratings.

Strengths

• Data from a controlled experiment with 128 participants across 32 distinct groups.
• Clear manipulation of two independent variables (competitive and cooperative contexts).

Limitations

• Small sample size of 128 participants limits statistical power and generalizability.
• Population bias as all participants are Japanese university students.
• The 5.5 KB file size indicates a very limited scope, likely containing only summary or aggregated results.

Provenance

Source

Yume Souma via figshare.

Collection Method

Controlled group decision experiment with university students.

Time Range

Experimental data collection date not specified; dataset published in 2026.

Freshness

Last updated in April 2026.

Geography

Japan, specifically concerning Fukushima Prefecture.