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Related Experiment Videos

Sensitivity of time allocation to concurrent-schedule reinforcement.

M Aldiss, M Davison

    Journal of the Experimental Analysis of Behavior
    |July 1, 1985
    PubMed
    Summary

    Pigeons trained on concurrent schedules showed similar sensitivities to reinforcement whether schedule access was limited or unlimited. Excluding non-key-pecking behavior from time measures revealed equal time and response sensitivities in limited-access procedures.

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    Area of Science:

    • Behavioral Psychology
    • Animal Behavior Studies
    • Operant Conditioning

    Background:

    • Concurrent variable-interval schedules are fundamental in studying choice behavior.
    • The generalized matching law is a key model for analyzing choice under reinforcement.

    Purpose of the Study:

    • To compare reinforcement sensitivities under limited versus unlimited schedule access in pigeons.
    • To investigate the impact of excluding non-key-pecking behavior on sensitivity measures.

    Main Methods:

    • Pigeons were trained on concurrent schedules with controlled access to a center key via side-key responses.
    • Two procedures were employed: limited access (3-s) and unlimited access.
    • Data were analyzed using the generalized matching law, comparing sensitivities to reinforcement.

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    Main Results:

    • Sensitivities to reinforcement of interchangeover time and response sensitivities were similar in magnitude for both limited and unlimited access procedures.
    • Switched-in time, a measure excluding non-key-pecking behavior, showed smaller sensitivities than interchangeover time.
    • Switched-in time sensitivities approximated response sensitivities in the limited-access condition.

    Conclusions:

    • Time and response sensitivities become approximately equal when non-key-pecking behavior is excluded from interchangeover time measures.
    • The generalized matching law effectively describes pigeon behavior under different schedule access conditions.
    • Limited access procedures provide a valuable method for analyzing behavior uncontaminated by extraneous activities.