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A Fully Automated Rodent Conditioning Protocol for Sensorimotor Integration and Cognitive Control Experiments

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Uncertainty reduction, conditioned reinforcement, and observing.

E Fantino, J Moore

Journal of the Experimental Analysis of Behavior

|January 1, 1980

Summary

This summary is machine-generated.

Pigeons showed a preference for multiple schedules over mixed schedules in reinforcement tasks. Findings challenge the uncertainty-reduction hypothesis, suggesting stimulus strength is not solely based on uncertainty reduction.

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Area of Science:

Behavioral psychology
Animal cognition
Operant conditioning

Background:

Conditioned reinforcement and observing responses are crucial in understanding choice behavior.
The delay-reduction hypothesis and uncertainty-reduction hypothesis offer competing explanations for these phenomena.

Purpose of the Study:

To investigate pigeon preferences between mixed and multiple fixed-interval schedules of reinforcement.
To test the predictions of the delay-reduction and uncertainty-reduction hypotheses regarding schedule preference.

Main Methods:

A concurrent-chains procedure was employed, allowing pigeons to choose between schedules.
Two experiments varied the probabilities and order of fixed intervals within mixed and multiple schedules.

Main Results:

Pigeons consistently preferred multiple schedules over mixed schedules across both experiments.
Schedule preference was influenced by interval probabilities in the first experiment but not systematically in the second.
Results contradicted the uncertainty-reduction hypothesis's prediction of symmetrical preferences.

Conclusions:

The findings support the delay-reduction hypothesis over the uncertainty-reduction hypothesis in explaining pigeons' schedule preferences.
Stimulus strength in reinforcement learning may not be adequately described by uncertainty reduction alone.