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Factors affecting conditional discrimination learning by pigeons.

D R Thomas, T Stengel, L Sherman

    Journal of the Experimental Analysis of Behavior
    |September 1, 1987
    PubMed
    Summary
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    Pigeon training on color discrimination and reversal tasks failed to show context control. However, daily alternation between tasks with correlated contexts successfully demonstrated conditional control, especially during extinction tests.

    Area of Science:

    • Animal cognition
    • Behavioral neuroscience
    • Comparative psychology

    Background:

    • Context plays a crucial role in associative learning and decision-making.
    • Understanding conditional control is key to deciphering complex cognitive processes in animals.
    • Pigeons (Columba livia) are widely used models for studying learning and memory.

    Purpose of the Study:

    • To investigate whether pigeons exhibit conditional control of discriminative performance by contextual cues.
    • To compare the effectiveness of sequential training versus daily alternation in establishing conditional control.
    • To determine the optimal testing conditions (reinforcement vs. extinction) for assessing conditional control.

    Main Methods:

    • Two experiments (within-subjects and between-subjects) were conducted with pigeons.

    Related Experiment Videos

  • Pigeons were trained on a color discrimination task followed by its reversal, with distinct floor-tilt/texture contexts.
  • Training involved either sequential presentation of tasks or daily alternation between tasks with correlated contexts.
  • Generalization tests were performed during reinforcement and extinction sessions.

    • Main Results:

    • Sequential training failed to establish conditional control by the contexts.
    • Daily alternation between tasks with correlated contexts successfully induced conditional control.
    • Conditional control was more evident in generalization tests conducted during extinction than during reinforcement sessions.

    Conclusions:

    • Contextual cues can influence discriminative performance in pigeons, but the training paradigm is critical.
    • Daily alternation of tasks with correlated contexts is a more effective method for establishing conditional control than sequential training.
    • Extinction testing provides a more sensitive measure of conditional control than reinforcement testing in this paradigm.