A comparison of the results from the experimental condition with those from the control condition in Exercise 21 revealed that prior exposure to the US by itself
a. slowed the subsequent conditioning of the CS at least slightly.
b. had no effect on the subsequent conditioning of the CS.
c. had no effect on the subsequent conditioning of the CS provided the CS was introduced with high intensity.
d. sped the subsequent conditioning of the CS.
a. slowed the subsequent conditioning of the CS at least slightly.
Answer feedback: The CS was presented at medium intensity. A comparison of the results from the two conditions indicates that acquisition proceeded more slowly in the experimental condition, consistent with the US pre-exposure effect.
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Answer the following statement true (T) or false (F)
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Indicate whether this statement is true or false.