Read the scenario below and answer the question that follows.William is taking part in an experiment. William is instructed to tickle his own nose, and as a result, he is about to sneeze. Before he sneezes, a research assistant shines a light in his eyes. After many repetitions of this behavior, when the research assistant shines a light in his eyes, William feels like he has to sneeze.What is the conditioned stimulus (CS) in this scenario?
A
William tickling his own noseD
the researcher’s presenceTickling William’s nose naturally brings on a sneeze, so it is the unconditioned stimulus. The light is repeatedly presented just before the sneeze; after these pairings, the light alone makes him feel that he has to sneeze. Therefore, the light is the conditioned stimulus, choice C.
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