Question

azis drank a glass of orange juice before his chemotherapy treatments and became nauseated. for months just the sight of orange juice made azis sick. one day he looked at a glass of orange juice and did not feel nauseated. ______ has occurred. a. extinction b. spontaneous recovery c. stimulus discrimination d. stimulus generalization

Explanation:

Extinction occurs when a conditioned response (nausea to orange - juice) weakens and eventually disappears due to the lack of reinforcement (no more chemotherapy - orange - juice association). In this case, the nausea response to orange juice has vanished, which is what extinction represents. Spontaneous recovery is the reappearance of a previously extinguished conditioned response. Stimulus discrimination is the ability to distinguish between similar stimuli and respond differently. Stimulus generalization is responding to similar stimuli as if they were the original conditioned stimulus. Here, the disappearance of the nausea response indicates extinction.

Answer:

A. extinction