Classical conditioning involves associating a neutral stimulus with an unconditioned stimulus to produce a conditioned response.
In Pavlov's classical conditioning experiments, the unconditioned stimulus (UCS) was the dog food that elicited the unconditioned response (UR) of salivation. Over time, a neutral stimulus, like the sound of a bell, became the conditioned stimulus (CS), leading to the conditioned response (CR) of salivation, even in the absence of food.
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