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Related Experiment Videos

Negative reinforcement without shock reduction.

Journal of the Experimental Analysis of Behavior

|November 1, 1970

Summary

This summary is machine-generated.

Rats learned to press levers to delay shocks, but only when shock frequency remained constant. This behavior was not maintained if lever presses increased the overall number of shocks.

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Area of Science:

Behavioral neuroscience
Animal behavior studies

Background:

Operant conditioning principles govern learned behaviors.
Avoidance learning is a key area in understanding behavioral responses to aversive stimuli.

Purpose of the Study:

To investigate the conditions under which lever-press responding is maintained by delay-of-shock in rats.
To determine the role of overall shock frequency in maintaining delay-of-shock behavior.

Main Methods:

Rats were trained on a lever-press task.
Responses were programmed to delay the onset of electric foot-shocks.
Shock frequency was manipulated in different experimental conditions.

Main Results:

Stable lever-press responding was established when responses delayed shocks without altering overall shock frequency.

Related Experiment Videos

Lever-press responding was not maintained when the delay-of-shock procedure also increased the overall frequency of shocks.

Conclusions:

Lever-press responding maintained by delay-of-shock is dependent on the overall shock frequency remaining constant.
Rats' behavior is sensitive to the contingency between responses and the overall rate of aversive events.