Among the theories of tourists' buying behavior, which theory plays an important role in tourists' buying behavior? Please give an example.

Among the theories of tourists' buying behavior, which theory plays an important role in tourists' buying behavior? Please give an example. The relevant contents are as follows:

(1) habit formation theory; (2) Information processing theory; (3) Risk aversion theory; (4) Marginal utility theory.

For example:

When people are extremely thirsty, they need to drink water very much, and the first drink is the most urgent and enjoyable. However, with the decrease of thirst, their desire for the next glass of water also decreases, and when they are not thirsty, they are marginal. At this time, they may even feel uncomfortable if they continue to drink, and they will become more and more uncomfortable and more and more negative.

Sometimes called marginal contribution, when consumers increase one unit of consumer goods, its utility tends to decrease. In economics, it is called the diminishing rate of marginal benefit. In standard academic language, it means that the more times someone gets the same reward repeatedly in the near future, the less valuable the extra part of this reward is to him.

The law of demand in economics is based on this point, that is, the more goods users buy or use, the lower the cost they are willing to pay for the unit goods, because the utility brought by the later purchased goods is reduced.

For example, in the drinking experiment that the teacher did in class, four students took part in the experiment. When they drank the first glass of water, they all felt good, but by the second cup, three students felt that they couldn't drink any more, and another student said that they could have another cup. This is the marginal effect. When material consumption reaches a certain level, people will begin to get tired of it.

Marginal effects are everywhere in our lives. Just like in education, as we all know, we should seize the opportunity when educating students. First of all, we must learn to send charcoal in the snow. This requires the head teacher to go deep into the students, understand their needs and existing problems, lend a helping hand in time, and solve their difficulties, which can often get twice the result with half the effort.