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Related Experiment Videos

PARTIAL REINFORCEMENT (ACQUISITION) EFFECTS WITHIN SUBJECTS.

A AMSEL, J R MACKINNON, M E RASHOTTE

    Journal of the Experimental Analysis of Behavior
    |March 1, 1964
    PubMed
    Summary
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    Rats showed better acquisition performance in a runway task under partial reinforcement for starting and running times, but worse for goal entry. This confirms previous findings within subjects.

    Area of Science:

    • Behavioral Neuroscience
    • Animal Behavior

    Background:

    • Partial reinforcement (PR) and continuous reinforcement (CR) paradigms are fundamental in learning studies.
    • Previous research demonstrated differences in acquisition performance between PR and CR groups in runway tasks, but within-subject comparisons were limited.

    Purpose of the Study:

    • To investigate the within-subject effects of partial reinforcement (PR) versus continuous reinforcement (CR) on rat acquisition performance in a straight alley runway.
    • To compare performance measures at different stages of the response chain (starting, running, goal entry).

    Main Methods:

    • Twenty-two rats were trained in a straight alley runway.
    • Partial reinforcement (PR) was applied when the alley was black (B+/-).
    • Continuous reinforcement (CR) was applied when the alley was white (W+).
    Keywords:
    EXPERIMENTAL LAB STUDYRATSREINFORCEMENT (PSYCHOLOGY)

    Related Experiment Videos

  • Starting time, running time, and goal entry time were measured.

    • Main Results:

    • Higher terminal performance was observed under PR compared to CR for starting time and running time measures.
    • Lower terminal performance was observed under PR compared to CR for the goal entry time measure.
    • These within-subject findings corroborate previous between-group results in runway tasks.

    Conclusions:

    • Within-subject comparisons in runway tasks reveal nuanced effects of reinforcement schedules on different performance measures.
    • The discrete-trial procedure and multi-point measures in the runway offer a different perspective compared to Skinner box free-operant studies.