Define and give an example of the following: unconditioned stimulus, unconditioned response, conditioned stimulus, and conditioned response.

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The Answer is An unconditioned stimulus is a stimulus that elicits a response without prior learning.For example, presentation of food elicits salivation.An unconditioned response is a response that is elicited by an unconditioned stimulus, for example, salivation to food.A conditioned stimulus is one that did not previously elicit a response, but has come to do so because of appropriate pairings with another stimulus that elicits a response.For example, in Pavlov's experiment, the bell did not elicit salivation, but it came to do so because of appropriate pairings with food.The bell was therefore a conditioned stimulus.A conditioned response is a response elicited by a conditioned stimulus.In the example of Pavlov's experiment, when the bell eventually came to elicit salivation, salivation to the bell would be a conditioned response.Other appropriate examples are acceptable.

Define and Give an Example of the Following: Unconditioned Stimulus