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Related Experiment Videos

Psychophysics of remembering.

K G White1, J T Wixted

  • 1Department of Psychology, University of Otago, Dunedin, New Zealand. kgwhite@otago.ac.nz

Journal of the Experimental Analysis of Behavior
|February 24, 1999
PubMed
Summary
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This study introduces a new behavioral model for remembering in conditional discrimination tasks. The model explains how reinforcement history influences choices in delayed matching to sample, validated with pigeon experiments.

Area of Science:

  • Cognitive Psychology
  • Behavioral Neuroscience
  • Animal Cognition

Background:

  • Remembering is crucial for conditional discrimination tasks like delayed matching to sample.
  • Existing models may not fully capture the influence of reinforcement history on memory-based choices.

Purpose of the Study:

  • To propose a novel behavioral model of remembering within conditional discrimination.
  • To explain how effective stimulus values and reinforcement history influence choice behavior.
  • To predict how memory and discrimination difficulty affect choice outcomes.

Main Methods:

  • Developed a new computational model representing stimulus effects as Thurstonian distributions.
  • Incorporated a critical assumption linking effective stimulus values to past reinforcement ratios.

Related Experiment Videos

  • Utilized the matching law to determine choice probabilities based on reinforcement history.
  • Empirically tested the model using a delayed matching-to-sample procedure with pigeons.

    • Main Results:

    • Model predictions align with empirical data from pigeon experiments.
    • The model successfully explains the role of reinforcement history in choice behavior.
    • Standard deviations of stimulus distributions increase with retention interval duration.
    • The distance between distribution means is influenced by discrimination difficulty.

    Conclusions:

    • The proposed behavioral model offers a robust framework for understanding remembering in conditional discrimination.
    • Reinforcement history is a key determinant of choice in such tasks.
    • The model's predictions regarding discriminability and retention interval duration are supported by empirical evidence.