A researcher conducted an experiment with rats in which she paired the administration of a drug that boosted the immune system with sweet water. Later, when the drug was removed and the rats continued to receive just the sweet water, the functioning of the rats' immune systems
A)improved
B)decreased
C)showed evidence of stimulus generalization
D)remained unchanged

Question

Quizplus · Accepted Answer

This phenomenon is an example of classical conditioning, where the rats associated the sweet water (a neutral stimulus) with the immune-boosting drug (an unconditioned stimulus). After repeated pairings, the sweet water alone (now a conditioned stimulus) elicited an improved immune response (a conditioned response), even in the absence of the drug.

A Researcher Conducted an Experiment with Rats in Which She