Imagine you work as a clerk at a local grocery store. A mother and her young son come in the store regularly. The child always screams when he is checking out, until the mother agrees to buy the child some candy. For a long time, you witness the mother buying candy during checkout so the child will stop screaming. Then, one day, you notice the mother refuses to buy the child candy. The child become increasingly upset when denied candy; however, a few weeks later, you see the mother and child at the store, and the child does not scream for candy.You have witnessed the extinction of a behavior - the disappearance of a previously learned behavior when the behavior is not reinforced. Extinction can occur in all types of behavioral conditioning, but the term is most often associated with its occurrence in operant conditioning.
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