透明でランダムな出来事を予測するときに,人々は過去のパフォーマンスに将来の期待を調整します.
Russell Roberts1, Reid Hastie1, Alexander Todorov1
1Booth School of Business, University of Chicago, Chicago, IL 60637, USA.
PNAS nexus
|August 28, 2025
まとめ
ランダムな出来事のパターンを 見る傾向があり 将来の期待やリスクに 影響を及ぼします ランダムにコインを投げても 成功は楽観主義と リスクを負うことを促し 失敗は悲観主義と リスク回避を促します
科学分野:
- 認知心理学
- 行動経済学
- 意思決定科学
背景:
- ランダムとパターンのシーケンスを見分けるのに苦労します
- 勝手な状況でも 勝手な状況でも 勝手な状況でも 勝手な状況でも 勝手な状況でも 勝手な状況でも
研究 の 目的:
- ランダムなプロセスからのパフォーマンスのフィードバックが将来の期待とリスクを取る方法にどのように影響するか調べる.
- ランダムな結果に対するコントロールの認識の基礎にある心理的メカニズムを検証する.
主な方法:
- 5つの実験で 1万2千人以上の参加者が 公平なコイン投げの結果を予測しました
- 参加者は,欺かれることなく,異なる数の"成功" (正しい予測) を受けました.
- 予測行動,将来の期待,リスクの傾向の分析
主要な成果:
- ランダムにコインを投げると 予測の成功率が高くなり 将来の期待が楽観的になり リスクが増加しました
- 成功率の低下は悲観的な期待と リスク回避の行動をもたらしました
- パフォーマンス推論の強さは,予測を変更する参加者の傾向と相関しており,誤った相関が認識されていることを示唆しています.
結論:
- ランダムなシーケンスでのパフォーマンスから予測シグナルを推論する強い傾向があります.
- この推論は,歪んだ確率の信念やリスクの態度によって説明されるのではなく,幻想的な相関を検出することによって説明される.
- ランダムな出来事を解釈する際の 根本的な人間のバイアスと 意思決定への影響が明らかになりました
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