试验间隔作为歧视性操作学习中的上下文刺激.
Emery W Harlan1, Eric A Thrailkill1, John T Green1
1Department of Psychological Science, University of Vermont.
概括
试验间隔 (ITI) 持续时间可以控制操作对象的反应,类似于帕夫洛夫制约. 在特定的学习条件下,这种时间上下文控制可以转移到新的环境中.
科学领域:
- 行为神经科学 行为神经科学
- 学习和记忆的学习和记忆
- 动物行为 动物行为
背景情况:
- 在帕夫洛夫制约中,试验间隔 (ITI) 持续时间可以作为一个上下文刺激.
- 之前的研究表明,ITI持续时间调节了受条件响应.
研究的目的:
- 调查ITI持续时间是否可以调节运营商的响应.
- 为了确定时间上下文控制是否在物理环境中转移.
主要方法:
- 使用老鼠和操作条件的四个实验.
- 在歧视性刺激 (SD) 之前操纵的ITI持续时间 (1分钟对4分钟).
- 在不同的操作室中测试了时间控制的转移.
主要成果:
- 当较长的ITI信号增强时,老鼠获得了歧视性控制 (4+/1-),但不是反过来 (1+/4-).
- 时间上下文控制无法转移到新的物理上下文.
- 转移发生在新环境中学习了第二种非时间歧视时.
结论:
- 在ITI的持续时间内,ITI可以获得对受歧视的运营商的有条件控制.
- 时间上下文控制类似于帕夫洛夫的有条件反应.
- 在某些条件下,通过时间进行上下文控制可以在物理环境中转移.
相关概念视频
Operant Conditioning Intervention
121
Operant conditioning serves as a foundational principle in therapeutic interventions aimed at modifying maladaptive behaviors. Central to this approach is the notion that behaviors, both adaptive and maladaptive, are learned through reinforcement. By analyzing the environmental factors that reinforce problematic behaviors, clinicians can design interventions to weaken these reinforcements and replace maladaptive behaviors with healthier alternatives.
In operant conditioning, behaviors that are...
In operant conditioning, behaviors that are...
121
Associative Learning
596
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
Classical conditioning, also known...
596
Operant Conditioning
1.8K
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...
Reinforcement in operant conditioning can be positive or negative, both of which serve to increase the likelihood of a behavior. Positive...
1.8K
Timing and Consequences on Behavior
157
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...
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...
157
Generalization, Discrimination, and Extinction
814
Generalization, discrimination, and extinction are key concepts in operant conditioning that influence how behaviors are learned and maintained.
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
814


