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Related Experiment Videos

Sequence schedules of reinforcement.

M J Marr

    Journal of the Experimental Analysis of Behavior
    |January 1, 1971
    PubMed
    Summary

    Pigeons responded more under a fixed-interval sequence schedule than a fixed-ratio sequence schedule, even with identical reinforcement frequency. This suggests fixed-interval sequence schedules may share properties with simple fixed-interval schedules.

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    Area of Science:

    • Behavioral science
    • Animal behavior

    Background:

    • Second-order schedules of reinforcement are complex behavioral paradigms.
    • Understanding response patterns under sequential schedules is crucial for behavioral analysis.

    Purpose of the Study:

    • To compare pigeon responding under fixed-ratio sequence and fixed-interval sequence schedules.
    • To investigate the properties of fixed-interval sequence schedules in pigeons.

    Main Methods:

    • Pigeons were exposed to two types of second-order schedules: fixed-ratio sequence and fixed-interval sequence.
    • Discriminative stimuli signaled different fixed-interval components in a fixed order.
    • Reinforcement delivery varied based on schedule type and component completion.

    Main Results:

    • Pigeons exhibited significantly more responding under the fixed-interval sequence schedule across all components compared to the fixed-ratio sequence schedule.
    • Food presentations were infrequent except in terminal components under the fixed-interval sequence schedule.
    • A pattern of increased responding between reinforcements was observed, but terminal component rates were sometimes lower than penultimate component rates under the fixed-interval sequence schedule.

    Conclusions:

    • The fixed-interval sequence schedule elicited higher response rates than the fixed-ratio sequence schedule.
    • Fixed-interval sequence schedules appear to possess characteristics similar to simple fixed-interval schedules.
    • Behavioral momentum may be influenced by the sequential structure of reinforcement.

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