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相关概念视频

Reinforcement Schedules01:24

Reinforcement Schedules

123
Positive reinforcement is a powerful method for teaching new behaviors to both animals and humans. B.F. Skinner demonstrated this with his experiments using rats in a Skinner box. When a rat pressed a lever, it received a food pellet. This immediate reward encouraged the rat to repeat the behavior. This method, where a reward follows every instance of the behavior, is known as continuous reinforcement. It is highly effective for establishing new behaviors quickly.
Once a behavior is learned,...
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Decision Making: P-value Method01:09

Decision Making: P-value Method

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The process of hypothesis testing based on the P-value method includes calculating the P- value using the sample data and interpreting it.
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim  is also stated. These statements can act as null and alternative hypotheses:  a null hypothesis would be a neutral statement while the alternative hypothesis can...
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Randomized Experiments01:13

Randomized Experiments

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The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
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Timing and Consequences on Behavior01:08

Timing and Consequences on Behavior

63
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...
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Law of Effect01:06

Law of Effect

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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...
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Decision Making: Traditional Method01:14

Decision Making: Traditional Method

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The process of hypothesis testing based on the traditional method includes calculating the critical value, testing the value of the test statistic using the sample data, and interpreting these values.
First, a specific claim about the population parameter is decided based on the research question and is stated in a simple form. Further, an opposing statement to this claim is also stated. These statements can act as null and alternative hypotheses, out of which a null hypothesis would be a...
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Updated: May 20, 2025

A Conflict Model of Reward-seeking Behavior in Male Rats
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使用概率奖励方案进行任务切换.

Markus Janczyk1, Ludwig Danwitz1, Kerstin Fröber2

  • 1University of Bremen, Bremen, Germany.

Acta psychologica
|May 2, 2025
PubMed
概括
此摘要是机器生成的。

参与者倾向于在收到奖励后重复任务,无论奖励概率如何,这表明在自愿的任务切换行为中,赢-停留,输-换班策略.

关键词:
决策 决策是做出决定的.概率奖励是一种奖励.奖励前景 获得奖励的前景任务切换 任务切换赢-停留/输-换班时间

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An Automated T-maze Based Apparatus and Protocol for Analyzing Delay- and Effort-based Decision Making in Free Moving Rodents
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Operant Protocols for Assessing the Cost-benefit Analysis During Reinforced Decision Making by Rodents
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相关实验视频

Last Updated: May 20, 2025

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科学领域:

  • 认知心理学 认知心理学
  • 决策 决策 决策 决策
  • 行为神经科学 行为神经科学

背景情况:

  • 之前的研究链接奖励前景变化到任务切换行为.
  • 增加奖励前景通常会提高认知灵活性和自愿切换率 (VSR).
  • 在之前的任务中随机奖励往往导致较低的VSR,表明任务持久性.

研究的目的:

  • 调查概率奖励方案对任务交换的影响.
  • 检查高与低奖励概率如何影响自愿切换率 (VSR).
  • 为了确定奖励历史是否影响交换成本.

主要方法:

  • 三个实验涉及自愿和暗示的任务切换范式.
  • 实施了概率奖励条件 (高与低奖励概率).
  • 测量了自愿切换率 (VSR) 和切换成本.

主要成果:

  • 参与者在获得奖励后表现出较低的VSR,无论奖励概率如何 (赢-停留,输-换班策略).
  • 奖励历史没有影响交换成本,这表明保持了认知灵活性.
  • 这些发现扩展了先前关于奖励前景过渡和任务切换的观察.

结论:

  • 赢-停留,输-转移 (WSLS) 策略似乎在概率奖励环境中占主导地位,用于任务切换.
  • 奖励历史影响任务重复,但不会影响切换的认知成本.
  • 结果有助于理解决策策略和认知控制在不同的奖励意外情况下.