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Related Experiment Videos

Changeover behavior and preference in concurrent schedules.

B A Williams, M C Bell

    Journal of the Experimental Analysis of Behavior
    |May 1, 1996
    PubMed
    Summary
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    Pigeons preferred a stimulus associated with a lower-value schedule when reinforcer availability was not signaled. Preference reversed when a signal indicated reinforcer availability for the higher-value schedule.

    Area of Science:

    • Behavioral psychology
    • Animal behavior studies

    Background:

    • Pigeons were trained on complex reinforcement schedules.
    • Understanding choice behavior in pigeons is crucial for behavioral science.

    Purpose of the Study:

    • To investigate pigeon preference between concurrent schedules of reinforcement.
    • To determine if signaled reinforcer availability influences choice behavior.

    Main Methods:

    • Pigeons were exposed to multiple schedules with concurrent variable-interval schedules.
    • Probe tests assessed preference by measuring relative response rates to associated stimuli.
    • Experiment 1: Unsignaled reinforcer availability.
    • Experiment 2: Signaled reinforcer availability for the higher-value schedule.

    Related Experiment Videos

    Main Results:

    • In Experiment 1, pigeons preferred the stimulus paired with the lower-value schedule (VI 80-s).
    • In Experiment 2, preference shifted to the stimulus paired with the higher-value schedule (VI 20-s) when reinforcer availability was signaled.
    • This indicates a reversal in preference based on signaling.

    Conclusions:

    • Preference patterns are determined by changeover behavior established during training, not solely by reinforcement rate.
    • Signaling reinforcer availability significantly alters choice behavior in pigeons.