相关实验视频
Updated: Jan 23, 2026

12:09
Studying Food Reward and Motivation in Humans
Published on: March 19, 2014
24.1K
理性非理性:更好的学习者表现出更强的奖励频率偏差
Mianzhi Hu1, Darrell A Worthy1
1Department of Psychological and Brain Sciences, Texas A&M University.
Journal of experimental psychology. Learning, memory, and cognition
|January 22, 2026
概括
更好的学习者表现出更强的频率偏差,这表明这种决策策略可能是自适应性的. 当基于价值的选择不可靠时,这种偏见就会出现,这表明在复杂的环境中灵活学习.
科学领域:
- 认知心理学 认知心理学
- 神经科学是一个神经科学.
- 行为经济学是一种行为经济学.
背景情况:
- 频率效应,偏向于经常得到奖励的选择,通常被视为决策缺陷.
- 然而,它们的适应性作用,特别是与学习有关的作用,仍然不清楚.
研究的目的:
- 调查高级基线学习是否预测了对基于频率的偏差的易感性增加.
- 在不同的奖励条件下,探索学习准确性和基于频率的决策之间的关系.
主要方法:
- 一个主题内设计,使用四选项强化学习任务.
- 参与者在基线和奖励频率操纵条件下完成了任务.
- 计算建模用于评估学习和决策策略.
主要成果:
- 更高的训练准确度与更好的整体性能相关,但在特定选择场景中预测了更强的频率偏差.
- 具有更好的基线学习的参与者对更频繁,更不有价值的选择的偏见更大.
- 频率敏感的计算模型更适合具有更高基线学习的参与者.
结论:
- 频率效应在具有更好的基线学习的个体中更为明显,不一定表明学习有缺陷.
- 这种偏见可能代表一个灵活的,适应性战略,在不确定的环境中,基于价值的决策是昂贵的或不可靠的.
- 这些发现挑战了对频率效应的传统观点,认为频率效应纯粹是适应不良的.
相关概念视频
Confirmation Biases
8.1K
The confirmation bias is the tendency to focus on information that confirms our existing beliefs and ignore information that is inconsistent with our expectations. For example, if you think that your professor is not very nice, you notice all of the instances of rude behavior exhibited by the professor while ignoring the countless pleasant interactions he is involved in on a daily basis. Have you ever fallen prey to the confirmation bias, either as the source or target of such bias?
8.1K
Hindsight Biases
4.2K
Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now?
4.2K
Bias
7.3K
Bias refers to any tendency that prevents a question from being considered unprejudiced. In research, bias occurs when one outcome or answer is selected or encouraged over others in sampling or testing. Bias can occur during any research phase, including study design, data collection, analysis, and publication.
In statistics, a sampling bias is created when a sample is collected from a population, and some members of the population are not as likely to be chosen as others (remember, each member...
In statistics, a sampling bias is created when a sample is collected from a population, and some members of the population are not as likely to be chosen as others (remember, each member...
7.3K
Rational Emotive Behavior Therapy
382
Cognitive-behavioral therapies (CBTs) are grounded in the belief that our thoughts profoundly influence our emotions and actions. Advocates of CBT emphasize three core assumptions: first, that cognitions are identifiable and measurable; second, that they are central to psychological functioning; and third, that irrational or maladaptive beliefs can be replaced with rational and adaptive ones. This transformative approach to therapy has paved the way for specific models such as Albert...
382
Diode: Forward bias
2.1K
In semiconductor devices, diodes play a crucial role in directing current flow, and its operation is primarily categorized into forward bias and reverse bias. A diode is said to be forward-biased when its p-type region is connected to the positive terminal of a battery and its n-type region is linked to the negative terminal. This configuration reduces the potential barrier within the diode, allowing current to flow easily from the p to the n-type region.
The behavior of a diode in forward bias...
The behavior of a diode in forward bias...
2.1K
Biasing of FET
687
Biasing a Junction Field Effect Transistor (JFET) is crucial for setting operational parameters and ensuring efficient functioning in electronic circuits. JFETs are characterized by using a single carrier type in N-channel or P-channel configurations, where the channel is surrounded by PN junctions. These junctions are central to the device's ability to control current flow.
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the...
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the...
687

