Repeatedly presenting a CS by itself will result in ______________
A) extinction
B) spontaneous recovery
C) stimulus discrimination
D) stimulus generalization
Answer: A
Rationale: Extinction is the loss or weakening of a conditioned response when a conditioned stimulus and unconditioned stimulus no longer occur together. For example, with the dogs in Pavlov's experiment, if a tone is presented repeatedly and no food follows, then salivation should occur less and less, until eventually it may not occur at all.
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