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Related Concept Videos

Generalization, Discrimination, and Extinction01:24

Generalization, Discrimination, and Extinction

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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...
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Principles of Classical Conditioning01:23

Principles of Classical Conditioning

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Classical conditioning, as described by Ivan Pavlov, is a foundational concept in associative learning, where a neutral stimulus becomes capable of eliciting a conditioned response through association with an unconditioned stimulus. The process of acquisition, where this learning occurs, and the subsequent phenomena of contiguity, contingency, generalization, discrimination, extinction, and spontaneous recovery are crucial for a comprehensive understanding of classical conditioning.
During the...
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Instinctive Drift01:05

Instinctive Drift

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Instinctive drift refers to the tendency of animals to revert to their innate behaviors despite repeated reinforcement. Breland and Breland demonstrated this concept in an experiment with a raccoon. The raccoon was trained to pick up two coins and place them in a container in exchange for food. Initially, the raccoon learned to associate the coins with food, making them a conditioned stimulus or a substitute for food. However, over time, the raccoon became less willing to put the coins into the...
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Real-World Application of Classical Conditioning01:15

Real-World Application of Classical Conditioning

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Classical conditioning not only includes the initial pairing of stimuli but also extends to more complex forms, such as higher-order conditioning. Higher-order conditioning involves creating associations beyond the primary conditioned stimulus, resulting in a chain of conditioned responses.
Higher-order, or second-order, conditioning occurs when a neutral stimulus becomes associated with an already established conditioned stimulus through repeated pairings. For instance, if a dog has been...
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Conservation of Small Populations02:04

Conservation of Small Populations

16.5K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
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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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Related Experiment Video

Updated: Dec 30, 2025

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear
11:17

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear

Published on: August 24, 2012

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The rescue effect and inference from isolation-extinction relationships.

Nathan D Van Schmidt1, Steven R Beissinger1,2

  • 1Department of Environmental Science, Policy, and Management, University of California - Berkeley, Berkeley, CA, USA.

Ecology Letters
|January 26, 2020
PubMed
Summary
This summary is machine-generated.

Metapopulation rescue occurs via recolonization, but its reliability is challenged by disturbance and unreliable isolation-extinction metrics, especially for mobile species like Virginia rails.

Keywords:
AutologisticVirginia railblack raildispersalisolationmetapopulationoccupancyrescue effectwetland

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Area of Science:

  • Ecology
  • Conservation Biology
  • Population Dynamics

Background:

  • The rescue effect in metapopulations suggests less isolated patches have lower extinction risk due to recolonization or demographic rescue.
  • Direct evidence for these rescue mechanisms remains scarce, with most studies relying on indirect isolation-extinction relationships.
  • This study investigates recolonization rescue frequency and the reliability of inferences from isolation-extinction metrics in black rails and Virginia rails.

Discussion:

  • Recolonization rescue was observed at expected rates in black rail and Virginia rail metapopulations.
  • Disturbance events, leading to non-equilibrium metapopulation dynamics, were associated with elevated recolonization rescue.
  • Inferences drawn from isolation-extinction relationships proved unreliable, particularly autologistic measures and for the more mobile Virginia rail.

Key Insights:

  • Directly observed recolonization rescue aligns with metapopulation theory.
  • Metapopulation dynamics can be significantly influenced by external disturbances, impacting rescue effect frequency.
  • Standard isolation-extinction models may provide misleading conclusions about metapopulation rescue, especially for highly mobile species.

Outlook:

  • Future research should focus on integrating direct observation of recolonization with dynamic metapopulation modeling.
  • Developing more robust statistical approaches is crucial for accurately assessing rescue effects in variable environments.
  • Conservation strategies for species like black rails and Virginia rails should account for disturbance-driven metapopulation dynamics and model limitations.