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Preference for signalled reinforcement.

P Lewis, L Lewin, P Muehleisen

    Journal of the Experimental Analysis of Behavior
    |July 1, 1974
    PubMed
    Summary
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    Pigeons preferred a signalled schedule over an unsignalled one, actively choosing the signalled reinforcement. This preference was driven by the predictive tone, demonstrating the value of information in operant conditioning.

    Area of Science:

    • Behavioral Psychology
    • Operant Conditioning
    • Animal Behavior

    Background:

    • Operant conditioning research often explores how different schedules of reinforcement influence behavior.
    • The role of informational cues in guiding choice behavior within complex schedules is a key area of investigation.

    Purpose of the Study:

    • To investigate pigeons' preference between a signalled and an unsignalled variable-interval schedule of reinforcement.
    • To determine if the predictive value of a signal influences choice behavior in a two-component multiple schedule.

    Main Methods:

    • Pigeons were trained on a two-component multiple schedule where one component featured a tone preceding reinforcement, while the other was unsignalled.
    • Subjects were then given a choice between the signalled and unsignalled schedules, with a changeover key allowing access to the signalled schedule.

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  • Experiments systematically manipulated the presence and function of the auditory signal to assess its impact on choice.

    • Main Results:

    • Pigeons overwhelmingly preferred and actively chose the signalled schedule, dedicating over 90% of session time to it via changeover key responding.
    • The preference for the signalled schedule was directly linked to the auditory cue; responses declined when the cue was removed or its function altered.
    • Results suggest that the information provided by the signal significantly influences choice behavior, aligning with information or escape hypotheses.

    Conclusions:

    • The predictive auditory cue significantly enhanced the value of the signalled schedule, leading to a strong preference in pigeons.
    • Findings support theories that emphasize the role of information or the reduction of uncertainty in operant choice.
    • This study highlights the importance of discriminative stimuli in shaping complex behavioral choices within reinforcement schedules.