Molly's dog no longer sits when Molly says "Sit!" because she no longer feeds the animal table scraps when it obeys.The dog sits,though,when Molly's sister visits one evening and says "Sit!" Molly's dog is demonstrating:

Question

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Molly's dog had previously learned the association between the command "sit" and receiving table scraps as a reward. When the reward was removed, the behavior of sitting eventually extinguished. However, the dog's behavior of sitting resurfaced after a period of time when Molly's sister gave the same command. This is an example of spontaneous recovery - the reappearance of an extinguished response following a rest period.

Molly's Dog No Longer Sits When Molly Says "Sit!" Because