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Momentary maximizing in concurrent schedules with a minimum interchangeover interval.

J C Todorov, D G Souza, C M Bori

    Journal of the Experimental Analysis of Behavior
    |September 1, 1993
    PubMed
    Summary
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    Adding a delay between switching options in concurrent schedules makes pigeons less sensitive to reinforcement differences. This behavior aligns with momentary maximizing theory, not molar theories.

    Area of Science:

    • Behavioral psychology
    • Animal behavior studies
    • Operant conditioning

    Background:

    • Concurrent schedules of reinforcement are fundamental in studying choice behavior.
    • Changeover delays (CODs) are often used to limit excessive switching between concurrent schedules.
    • The impact of varying COD durations on choice behavior requires further investigation.

    Purpose of the Study:

    • To investigate how varying minimum interchangeover times (changeover delays) affect pigeons' choice behavior under concurrent variable-interval schedules.
    • To test the predictions of momentary maximizing theory, molar maximizing theories, and melioration theory regarding choice under these conditions.

    Main Methods:

    • Eight pigeons were trained on concurrent variable-interval variable-interval schedules.

    Related Experiment Videos

  • Experiment 1 manipulated the minimum interchangeover time (0-200s) with constant reinforcement schedules.
  • Experiment 2 used constant minimum interchangeover times (0, 2, 10, 120s) across different reinforcement ratios.

    • Main Results:

    • Longer minimum interchangeover times led to relative response rates and time deviating from relative reinforcement rates towards indifference.
    • The exponent in the generalized matching equation decreased as the minimum interchangeover time increased.
    • A minimum interchangeover time of 0s yielded an exponent close to 1.0, typical for concurrent schedules without delay.

    Conclusions:

    • The findings support the momentary maximizing theory of choice behavior.
    • Data contradict predictions from molar maximizing theories and melioration theory.
    • Changeover delays significantly alter the sensitivity to reinforcement differences in concurrent schedule choice.