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Bidirectional instrumental conditioning

A Dickinson1, J Campos, Z I Varga

  • 1University of Cambridge, U.K.

The Quarterly Journal of Experimental Psychology. B, Comparative and Physiological Psychology
|November 1, 1996
PubMed
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Rats learned specific action-reinforcer relationships in bidirectional instrumental conditioning. These learned associations were not explained by Pavlovian associations, suggesting a direct instrumental learning mechanism.

Area of Science:

  • Behavioral neuroscience
  • Animal behavior

Background:

  • Instrumental conditioning involves learning action-outcome associations.
  • Bidirectional tasks allow for studying competing learned responses.

Purpose of the Study:

  • To investigate the learning mechanisms in bidirectional instrumental conditioning.
  • To determine if Pavlovian associations mediate instrumental learning.

Main Methods:

  • Rats were trained on a bidirectional pole-pushing task with different reinforcers.
  • Specific satiety, contingency degradation, and reinforcement rate manipulations were used.
  • Performance was assessed during extinction tests.

Main Results:

  • Specific satiety selectively reduced performance of the associated action.

Related Experiment Videos

  • Degraded instrumental contingencies impaired performance.
  • Increased reinforcement rate enhanced one action's performance without affecting the other.

    • Conclusions:

    • Learned action-reinforcer relations are sensitive to reinforcer devaluation and contingency.
    • Findings suggest that instrumental learning, not Pavlovian associations, underlies these effects.