理論的思考の進化のルーツを探る:誤った信念課題における霊長類の誤りは表象的限界を明らかにする
Amanda Royka1, Daniel J Horschler1, Walker Bargmann1
1Department of Psychology, Yale University, United States of America.
Cognition
|December 30, 2025
まとめ
アカゲザルは誤った信念課題に苦労し、エージェントの古い知識に基づいた行動を予測できない。これは、理論的思考(ToM)の発達における限界を示唆しており、人間の乳児の能力を反映している可能性がある。
科学分野:
- 認知科学
- 比較心理学
- 神経科学
背景:
- 人間の成人は、他者の精神状態を推論することを可能にする心の理論(ToM)を持っている。
- 心の理論(ToM)の起源の理解は、乳児や非ヒト霊長類におけるToM課題の一貫性のないパフォーマンスのために困難である。
研究 の 目的:
- 非ヒト霊長類が誤った信念課題で失敗する理由を調査する。
- 霊長類の心の理論(ToM)の限界をより詳細に理解する。
主な方法:
- 566匹のアカゲザルを対象に4回の研究を実施した。
- 予期せぬ行動を含む制御条件を含む、誤った信念シナリオにおけるエージェントの行動を予測するサルの能力を評価した。
主要な成果:
- アカゲザルは、エージェントが予期せず行動した場合でも、誤った信念に基づいてエージェントの行動を予測できなかった。
- サルは、誤った信念の帰属に関する特定の困難を示唆する、密接に一致した制御課題に成功した。
結論:
- サルは、エージェントの認識なしに環境が変化した場合、エージェントの知識の表現を更新できないようである。
- 他者の知識の表現を維持するこの限界は、彼らのToMの欠陥を説明する可能性があり、人間の乳児と共有される可能性がある。
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