Your dog Hans loves to ride in the car. Whenever anyone picks up a set of keys he races for the door. When your grandmother, who is afraid of dogs, arrives for a visit, Hans is not allowed to ride in the car
By the end of her two-week visit, he has ceased going to the door when the keys come out. However, after a brief vacation away from home, he's back at the door again as soon as he hears the keys. Why?
a. Generalization has occurred.
b. Grandma produced external inhibition in the dog.
c. Spontaneous recovery has occurred.
d. Counterconditioning occurred during the vacation.
Answer: c
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How are people generally exposed to antibodies?
a. During exposure to diseases such as measles b. From the mother, during the prenatal period c. From milk, during nursing in the postnatal period d. All of the above