By ringing a bell whenever he gave food to his lab dogs, Pavlov eventually got the dogs to salivate to the sound of the bell. In this context the salivation elicited by sound of the bell is called the response.

Classical Conditioning

Explanation:

Salivating to food in the mouth is reflexive, so no learning is involved. The dogs' salivation was an unconditioned response (UCR).

Pavlov's theory  developed into classical conditioning, which refers to learning that associates an unconditioned stimulus that already results in a response (such as a reflex) with a new, conditioned stimulus. As a result, the new stimulus brings about the same response.

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