So, time pressure issue seems evolutionary psychology, it looks at how consumer behavior has beed affected by psychological adjustments during time pressure evoluation. It seeks to identify which consumer psychological traits are evolved through adaptations, e.g. time pressure consumption adaptations to choose the final purchase decision in the final time limited consumption pressure environment, e.g. the consumer expects this day is the final day to choose to buy what kinds of the product. If he/she can't make final purchase decisin on the day, he/she will choose to buy the kind of product later, even he/she does not choose to buy the kind of product in the first or again, that is the products of natural selection, or the supermaket visitor case, he expects to choose which kind of food to eat within final 15 minutes, if he/she can't make the final decision to buy what kind of food to eat within final 15 minutes in this supermarket, or the restaurant eatting consumer case, he is queueing to wait to enter the restaurant to eat. He/she expects the final queue waiting time is 15 minutes maximum. If after this 15 minutes, he/she can not be permited to enter this restaurant, then he/she will choose to leave this restaurant and he/she will find another restaurant to replace it. So, it seems that any consumer will have himself/herself consumption limited stardard time to decide whether he/she ought choose to buy any products or consume any services in any consumption environment.Hence, the cause of consumption time pressure dominates consumer behavior, it is based on these hypothesis: Every consumer has demand characteristic and time pressure can dominate how he/she make final decision to buy or not buy any product or consume any service as well as any consumer needs have time pressure consumption demand because he/she does not expect to epend more time to choose what kinds of products to buy or what kinds of services to consume. He/she expects to make purchase or consumption final decision in short time.

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