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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.
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Incentive Theory: Pull Theory of Motivation01:18

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Incentive theory, or the "pull theory" of motivation, suggests that external rewards primarily drive behavior. Individuals are motivated to engage in activities when they anticipate a desirable outcome. This is why people often work hard for promotions or study intensively to achieve high grades. These incentives can be tangible, physical rewards such as money or promotions, or intangible, non-physical rewards like praise and social recognition.
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Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
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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. 
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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.
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Reinforcement Schedules01:24

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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.
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Reward advantage over punishment for incentivizing visual working memory.

Yurong Sun1,2, Pyungwon Kang3, Leyu Huang2

  • 1Guangdong Provincial Key Laboratory of Brain Function and Disease, Center for Brain and Mental Well-Being, Department of Psychology, Sun Yat-sen University, Guangzhou, China.

Psychophysiology
|March 26, 2023
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Rewarding cues enhance visual working memory (WM) performance more than punishing cues. This study found that rewards improved WM precision and confidence, supported by distinct brain activity patterns.

Keywords:
ERPconfidence ratingpunishmentrewardworking memory

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Area of Science:

  • Cognitive Neuroscience
  • Neuroeconomics
  • Human Behavior

Background:

  • Human behavior is significantly influenced by the anticipation of rewards and avoidance of punishment.
  • The precise impact of motivational signal valence (reward vs. punishment) and magnitude on working memory (WM) remains incompletely understood.

Purpose of the Study:

  • To investigate the interactive effects of incentive valence and magnitude on visual working memory (WM) performance.
  • To compare the neural correlates associated with reward versus punishment cues during a WM task using electroencephalography (EEG).

Main Methods:

  • A free-recall visual working memory task was employed.
  • Electroencephalography (EEG) was utilized to record brain activity.
  • Incentive valence (reward/punishment) and magnitude were manipulated.

Main Results:

  • Incentive signals generally improved WM precision compared to a no-incentive condition.
  • Rewarding cues led to significantly greater improvements in WM precision and post-task confidence ratings than punishing cues.
  • Event-related potential (ERP) analysis revealed reward-related advantages, including earlier Late Positive Component (LPC) latency, larger Contingent Negative Variation (CNV) amplitude during expectation, and larger P300 amplitude during sample and delay periods.

Conclusions:

  • Rewarding cues exert a more beneficial influence on visual working memory than punishing cues.
  • Behavioral and neural findings demonstrate a clear reward advantage in incentivizing WM.
  • Individual differences in neural responses to reward vs. punishment correlated with subjective confidence ratings, highlighting the integrated nature of motivation and cognition.