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Related Experiment Videos

Contrast, induction, facilitation, suppression, and conservation.

J Allison

    Journal of the Experimental Analysis of Behavior
    |March 1, 1976
    PubMed
    Summary
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    Rats trained on mixed schedules learned to press levers for water, showing altered drinking and pressing behaviors. Conservation theory accurately predicted these behavioral changes, offering a new framework for understanding reinforcement schedules.

    Area of Science:

    • Behavioral psychology
    • Animal behavior studies
    • Operant conditioning

    Background:

    • Rats were trained to press a lever for water access in controlled sessions.
    • Mixed schedules involved two alternating components, each linking lever presses to drinking time.
    • Baseline and contingency phases established initial and experimental conditions.

    Purpose of the Study:

    • To investigate the effects of mixed schedules on lever pressing and drinking behavior in rats.
    • To test the predictive power of conservation theory against observed behavioral changes.
    • To compare conservation theory with existing theories like probability-differential and response-deprivation theory.

    Main Methods:

    • Ten rats were subjected to a baseline phase followed by training on mixed schedules.

    Related Experiment Videos

  • Water was provided only during specific, scheduled access periods contingent on lever pressing.
  • Behavioral data on lever pressing and drinking time were systematically recorded.

    • Main Results:

    • Mixed schedules increased lever pressing and decreased drinking time compared to baseline.
    • Changes in one schedule component induced contrast and induction effects in the other.
    • Conservation theory quantitatively predicted the observed patterns of lever pressing and drinking.

    Conclusions:

    • The conservation theory provides a robust framework for predicting behavioral effects under mixed reinforcement schedules.
    • This theory offers a unified explanation for phenomena previously addressed by separate theoretical models.
    • The findings highlight the importance of resource allocation in understanding operant behavior.