"Black Friday," as the day after Thanksgiving has come to be known in the United States, is a day marked by many special deals in most retail stores, including deep-discounted products available in limited quantities, called "doorbusters," and designed to get shoppers into the store. But one danger of running out of the doorbuster deals is that a shopper may become angry or discouraged at failing to get the special item and decide not to do any more shopping. This is an example of the impact of on the consumer decision process.