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関連する概念動画

Punishment01:27

Punishment

1.0K
Negative reinforcement and punishment are often confused but serve distinct functions in behavior modification. Reinforcement, whether positive or negative, increases the likelihood of a desired behavior, while punishment decreases it.
Punishment can be positive or negative. Positive punishment involves adding an undesirable stimulus, such as scolding, to decrease a behavior. Negative punishment involves removing a desirable stimulus, such as taking away a favorite toy, to decrease behavior....
1.0K
Operant Conditioning01:21

Operant Conditioning

3.0K
Operant conditioning, a key concept in behavioral psychology, involves using reinforcement and punishment to alter the likelihood of a behavior being repeated. B.F. introduced this type of conditioning. Skinner focused on voluntary behaviors and the consequences that follow them, influencing whether these behaviors will be strengthened or diminished.
Reinforcement in operant conditioning can be positive or negative, both of which serve to increase the likelihood of a behavior. Positive...
3.0K
Timing and Consequences on Behavior01:08

Timing and Consequences on Behavior

505
In operant conditioning, the timing of reinforcement is crucial. For animals like rats and cats, immediate reinforcement (within a few seconds) is much more effective than delayed reinforcement. For example, a food reward for a rat needs to follow within 30 seconds of pressing a bar to be effective. 
Humans, however, can respond to delayed reinforcers. We often make decisions between immediate small rewards and delayed larger rewards. This ability to delay gratification is a significant...
505
Reinforcement01:23

Reinforcement

1.0K
Positive and negative reinforcement are key concepts in operant conditioning, a learning process where the consequences of a behavior affect the likelihood of that behavior being repeated.
Positive reinforcement occurs when a behavior is followed by the presentation of a rewarding stimulus, increasing the frequency of that behavior. For example:
1.0K
Law of Effect01:06

Law of Effect

4.4K
B.F. Skinner, a prominent figure in behavioral psychology, introduced operant conditioning by emphasizing the role of consequences in shaping behavior. This theory builds upon the law of effect proposed by Edward Thorndike, which posits that behaviors followed by satisfying outcomes are likely to be repeated. In contrast, those followed by unsatisfying outcomes are less likely to recur.
Edward Thorndike's foundational work involved studying learning in animals, particularly using puzzle...
4.4K
Primary and Secondary Reinforcers01:23

Primary and Secondary Reinforcers

1.2K
In psychology, reinforcement is a key concept in behavior modification. B.F. Skinner demonstrated this with his experiments involving rats in what is known as a Skinner box. The rats learned to press a lever to receive food, a primary reinforcer that fulfilled their innate need for nourishment.
Effective reinforcers for humans vary depending on the individual and the context. Primary reinforcers, such as food, water, sleep, shelter, and pleasure, have inherent value and satisfy basic biological...
1.2K

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関連する実験動画

Updated: Feb 26, 2026

Pavlovian Conditioned Approach Training in Rats
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Pavlovian Conditioned Approach Training in Rats

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罰は線条体の予測誤差を調節することにより報酬学習を強化する

J Carvalheiro1, F Queirazza2, L Pesonen3

  • 1School of Psychology & Neuroscience, University of Glasgow, Glasgow, G12 8QB, United Kingdom joana.carvalheiro@glasgow.ac.uk.

The Journal of neuroscience : the official journal of the Society for Neuroscience
|February 24, 2026
PubMed
まとめ

罰は人間の報酬学習とその神経信号を強化し、意思決定に不可欠なプロセスです。行動およびfMRI研究で観察されたこの効果は、文脈が学習をどのように形成するかを強調しています。

キーワード:
報酬学習予測誤差線条体罰意思決定認知神経科学神経経済学

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関連する実験動画

Last Updated: Feb 26, 2026

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科学分野:

  • 認知神経科学;行動経済学;神経経済学

背景:

  • 人間の意思決定は、報酬と罰の両方の文脈をしばしば伴います。以前の研究では、報酬学習と罰学習はほとんど独立して扱われてきました。報酬学習と罰学習の間の相互作用は、ほとんど探求されていません。

研究 の 目的:

  • 共存する罰が健常者の報酬学習にどのように影響するかを調査すること。機能的磁気共鳴画像法（fMRI）を使用して、この相互作用の神経相関を調べること。報酬が罰学習に影響を与えるかどうかを判断すること。

主な方法:

  • 金銭的結果を伴う確率的学習タスクを含む3つの研究が実施されました。参加者は、混合または分離された報酬と罰の文脈を経験しました。fMRIと計算モデリングを使用して、学習パラメータと神経信号を分析し、さらにfMRIメタアナリシスも使用しました。

主要な成果:

  • 罰は、特に混合された文脈において、報酬予測誤差からの学習率を高めることによって、報酬学習を増幅しました。fMRIデータは、罰が尾状核における報酬予測誤差信号を増強することを示しました。メタアナリシスは、罰が存在する場合に線条体の報酬反応がより強いことを確認しましたが、報酬は罰学習を相互に強化しませんでした。

結論:

  • 罰は、線条体の調節を通じて、報酬学習とその神経基盤を鋭化させます。報酬学習は、罰が重要な役割を果たす、より広範な結果の文脈によって大きく影響されます。この方向性のある調節は、学習と意思決定における罰と報酬の相互作用を理解するための新しい枠組みを提供します。