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Related Experiment Videos

Acquisition of preference in concurrent chains: comparing linear-operator and memory-representational models.

Randolph C Grace1

  • 1Department of Psychology, University of Canterbury, Private Bag 4800, Christchurch, New Zealand. r.grace@psyc.canterbury.ac.nz

Journal of Experimental Psychology. Animal Behavior Processes
|July 26, 2002
PubMed
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This study on pigeon behavior found that a linear-operator model accurately predicts preference acquisition in concurrent chains, especially when considering schedule duration.

Area of Science:

  • Behavioral science
  • Animal cognition
  • Learning theory

Background:

  • Understanding how preferences are acquired is crucial in behavioral economics and psychology.
  • Concurrent chains schedules are widely used to study choice behavior and reinforcement.
  • Existing models, such as linear-operator and memory-representational models, offer different explanations for preference acquisition.

Purpose of the Study:

  • To test the predictive power of two models (linear-operator and memory-representational) for preference acquisition in concurrent chains.
  • To investigate the influence of different schedule pairings (fixed-interval and variable-interval) on acquisition rates.
  • To examine the role of schedule duration in preference acquisition.

Main Methods:

  • Two experiments were conducted using pigeons as subjects.

Related Experiment Videos

  • A successive-reversal design was employed with pairs of fixed-interval and variable-interval terminal-link schedules.
  • Acquisition rates and effects of schedule duration were measured.

    • Main Results:

    • Acquisition rates were faster when fixed-interval schedules preceded variable-interval schedules after a reversal.
    • Acquisition rates were approximately constant when the same schedule pair was used repeatedly.
    • The linear-operator model, but not the memory-representational model, accurately predicted the effects of schedule duration.

    Conclusions:

    • A simple linear-operator model effectively accounts for key aspects of preference acquisition in concurrent chains.
    • The findings suggest that choice behavior during both transition and steady states can validate a single delay-discounting function.
    • This research contributes to a more refined understanding of reinforcement learning and decision-making processes.