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Related Experiment Videos

Conditional discrimination performance by pigeons on a response-independent procedure.

T A Looney, L R Cohen, J H Brady

    Journal of the Experimental Analysis of Behavior
    |March 1, 1977
    PubMed
    Summary

    Pigeons learned to distinguish between food and no-food cues in sequences. These conditional discriminations persisted even with delays, suggesting stimuli are composed of elements.

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    Area of Science:

    • Behavioral psychology
    • Animal cognition

    Background:

    • Differential autoshaping is a procedure used to train animals.
    • Conditional discrimination involves learning to respond differently to stimuli based on learned associations.

    Purpose of the Study:

    • To investigate the nature of controlling stimuli in conditional discrimination tasks in pigeons.
    • To examine the persistence of conditional control under extinction and delayed stimulus presentation.

    Main Methods:

    • Pigeons were trained using differential autoshaping with two-stimulus sequences predicting food or no food.
    • Extinction procedures and titration procedures with imposed delay intervals were used to test stimulus control.

    Main Results:

    • All pigeons successfully acquired the conditional discrimination.

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  • Stimuli maintained conditional control during extinction as long as responding continued.
  • Conditional control was maintained up to 7-10 second delay intervals between stimulus components.

    • Conclusions:

    • The findings support the theory that controlling stimuli in conditional discrimination are compounds of multiple stimulus elements.
    • Pigeon behavior in this task demonstrates robust conditional control that is resistant to extinction and temporal delays.