強化学習における自身の経験と他者の経験の共有効果とエピソード記憶
Maria A Woitow1, Anthony I Jang2, Ben Eppinger3,4
1Berlin School of Mind and Brain & Department of Psychology, Humboldt-Universität zu Berlin, Berlin, Germany. maria.woitow@hu-berlin.de.
NPJ science of learning
|March 1, 2026
まとめ
人間は経験と観察を通して学習する。報酬予測誤差(RPE)は、両方の学習タイプにおいて記憶を強化し、経験的学習と観察的学習のための共有記憶符号化メカニズムを示唆している。
科学分野:
- 認知神経科学
- 学習と記憶
- 意思決定
背景:
- 人間は直接的な経験と他者の観察から学習する。
- 報酬予測誤差(RPE)は、経験的および観察的文脈の両方における強化学習にとって重要である。
- 観察的学習中の記憶形成における代理RPEの役割はよく理解されていない。
研究 の 目的:
- 経験的学習と観察的学習が記憶にどのように影響するかを調査すること。
- 異なる学習条件下での記憶形成におけるRPEの役割を調べること。
- 代理RPEが経験的RPEと同様に記憶符号化に寄与するかどうかを判断すること。
主な方法:
- 意思決定タスクを用いた偶発的記憶パラダイムを利用した。
- 経験的学習条件と観察的学習条件の間で記憶パフォーマンスと確信度を比較した。
- RPE(ギャンブルおよび正)と記憶強化の関連を分析した。
主要な成果:
- 経験的学習と観察的学習において、認識精度は同様であった。
- 参加者は経験的試行において、より高い記憶確信度を報告した。
- 記憶アイテム提示中の正のRPEは、両方の学習タイプにおいて記憶を強化した。
結論:
- 経験的学習と同様に、観察的学習は記憶に影響を与えるRPEを含む。
- 経験的学習と観察的学習の両方における記憶形成は、共有の符号化メカニズムによって支えられている可能性がある。
- 代理RPEは、観察的学習中のエピソード記憶の形成において重要な役割を果たす。
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