Katie attached a bell to the lid of her dog's food container so it rang every time the lid was lifted, which alerted her dog to come eat. one day, katie removed the bell from the container and hung it on a closet door. after a month, during which her dog ran to the closet door and was not fed, he stopped responding to the sound of the bell. not responding to the bell anymore is an example of:

The answer is extinction. In psychology, it is experimental in both operant and classical conditioned behavior. In operant behavior, former reinforced behavior no longer makes reinforcing consequences this means that the behavior gradually stops happening. While in classical conditioning, a conditioned stimulus is existing alone, so that it no longer forecasts the approaching of the unconditioned stimulus, therefore the conditioned responding slowly ends.

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