With respect to the blocking phenomenon, what gets “blocked?”
a. The US
b. The conditioning of a new CS that is added to a previously conditioned CS to produce a compound US
c. A previously conditioned CS
d. The conditioning of a compound CS that is composed of two previously conditioned CSs
b. The conditioning of a new CS that is added to a previously conditioned CS to produce a compound US
Answer feedback: When a CS is conditioned to produce a strong CR, presenting that CS with a new CS in a compound CS effectively blocks the conditioning of the new CS, even though the compound CS is paired with the US.
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