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Related Experiment Videos

Stimulus control in a two-choice discrimination procedure.

W D Galloway

    Journal of the Experimental Analysis of Behavior
    |November 1, 1973
    PubMed
    Summary
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    This study examined how pigeons

    Area of Science:

    • Behavioral Psychology
    • Animal Cognition
    • Operant Conditioning

    Background:

    • Understanding stimulus control is crucial in behavioral psychology.
    • Previous research has explored factors influencing stimulus control, but the precise relationship with discriminative training performance requires further elucidation.

    Purpose of the Study:

    • To investigate the relationship between discriminative training performance and subsequent stimulus control measures in pigeons.
    • To determine how reinforcement schedules during training impact stimulus control.
    • To analyze the influence of response bias on stimulus control gradients.

    Main Methods:

    • Pigeons were trained to discriminate between bright and dim white light stimuli.
    • Responses on red and green side keys were differentially reinforced based on the center key's illumination.

    Related Experiment Videos

  • Stimulus control was assessed by varying light intensity and recording key responses.

    • Main Results:

    • The proportion of correct responses decreased as reinforcement frequency for correct responses diminished.
    • Stimulus control gradients showed a relationship with response bias during training.
    • Greater bias towards one key resulted in flatter gradients for that key's responses and steeper gradients for the other.

    Conclusions:

    • Discriminative training performance significantly influences subsequent stimulus control.
    • Reinforcement frequency is a key determinant of the strength of stimulus control.
    • Response bias during training can alter the shape of stimulus control gradients, impacting stimulus generalization.