In operant conditioning, when there has been a gradual reduction to the strength of a response due to repetitive stimulation, a new stimulus will cause responsiveness to return to a high level. What is this increase called:

Recovery

Explanation:

Recovery, in terms of operant conditioning, is the mechanisms in which the responsiveness of the event reaches high-level with increment when re-emergence from continuous simulation is overcomed .

Emergence of new stimulus through changing surrounding component or environment  are the methods for generation of higher level response again. Thus, responsiveness is recovered back.

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answer; martin seligman;